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18796469380 = 22513199433839
BaseRepresentation
bin10001100000010110…
…110101110010000100
31210111221212120121121
4101200112311302010
5301443344010010
612345053323324
71233536232163
oct214026656204
953457776547
1018796469380
117a76131717
123786a96544
131a07248440
14ca45173da
157502843da
hex4605b5c84

18796469380 has 96 divisors (see below), whose sum is σ = 42872256000. Its totient is φ = 6881200128.

The previous prime is 18796469371. The next prime is 18796469389. The reversal of 18796469380 is 8396469781.

It is an interprime number because it is at equal distance from previous prime (18796469371) and next prime (18796469389).

It is a super-2 number, since 2×187964693802 (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (18796469389) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 22403001 + ... + 22403839.

It is an arithmetic number, because the mean of its divisors is an integer number (446586000).

Almost surely, 218796469380 is an apocalyptic number.

18796469380 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 18796469380, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21436128000).

18796469380 is an abundant number, since it is smaller than the sum of its proper divisors (24075786620).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

18796469380 is a wasteful number, since it uses less digits than its factorization.

18796469380 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1493 (or 1491 counting only the distinct ones).

The product of its (nonzero) digits is 15676416, while the sum is 61.

The spelling of 18796469380 in words is "eighteen billion, seven hundred ninety-six million, four hundred sixty-nine thousand, three hundred eighty".

Divisors: 1 2 4 5 10 13 20 26 52 65 130 199 260 398 433 796 839 866 995 1678 1732 1990 2165 2587 3356 3980 4195 4330 5174 5629 8390 8660 10348 10907 11258 12935 16780 21814 22516 25870 28145 43628 51740 54535 56290 86167 109070 112580 166961 172334 218140 333922 344668 363287 430835 667844 726574 834805 861670 1120171 1453148 1669610 1723340 1816435 2170493 2240342 3339220 3632870 4340986 4480684 4722731 5600855 7265740 8681972 9445462 10852465 11201710 18890924 21704930 22403420 23613655 43409860 47227310 72294113 94454620 144588226 289176452 361470565 722941130 939823469 1445882260 1879646938 3759293876 4699117345 9398234690 18796469380