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18800603380 = 22513510714159
BaseRepresentation
bin10001100000100110…
…100111000011110100
31210112020122121101201
4101200212213003310
5302000423302010
612345322102244
71233616330516
oct214046470364
953466577351
1018800603380
117a784a5649
12378834a984
131a08064cb0
14ca4cb1bb6
157507ee23a
hex4609a70f4

18800603380 has 48 divisors (see below), whose sum is σ = 42529616640. Its totient is φ = 6939911808.

The previous prime is 18800603377. The next prime is 18800603383. The reversal of 18800603380 is 8330600881.

It is an interprime number because it is at equal distance from previous prime (18800603377) and next prime (18800603383).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18800603383) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1320741 + ... + 1334899.

It is an arithmetic number, because the mean of its divisors is an integer number (886033680).

Almost surely, 218800603380 is an apocalyptic number.

18800603380 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

18800603380 is an abundant number, since it is smaller than the sum of its proper divisors (23729013260).

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

18800603380 is a wasteful number, since it uses less digits than its factorization.

18800603380 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19288 (or 19286 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 37.

The spelling of 18800603380 in words is "eighteen billion, eight hundred million, six hundred three thousand, three hundred eighty".

Divisors: 1 2 4 5 10 13 20 26 52 65 130 260 5107 10214 14159 20428 25535 28318 51070 56636 66391 70795 102140 132782 141590 184067 265564 283180 331955 368134 663910 736268 920335 1327820 1840670 3681340 72310013 144620026 289240052 361550065 723100130 940030169 1446200260 1880060338 3760120676 4700150845 9400301690 18800603380