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18301928492 = 22374324111933
BaseRepresentation
bin10001000010111000…
…010100010000101100
31202020111022022001102
4101002320110100230
5244440243202432
612224025502232
71215352553051
oct210270242054
952214268042
1018301928492
117841a63841
123669341978
1319589550b3
14c58983028
15721b48962
hex442e1442c

18301928492 has 48 divisors (see below), whose sum is σ = 33801479712. Its totient is φ = 8659768320.

The previous prime is 18301928453. The next prime is 18301928539. The reversal of 18301928492 is 29482910381.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1527758 + ... + 1539690.

It is an arithmetic number, because the mean of its divisors is an integer number (704197494).

Almost surely, 218301928492 is an apocalyptic number.

It is an amenable number.

18301928492 is a deficient number, since it is larger than the sum of its proper divisors (15499551220).

18301928492 is a wasteful number, since it uses less digits than its factorization.

18301928492 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12258 (or 12256 counting only the distinct ones).

The product of its (nonzero) digits is 248832, while the sum is 47.

The spelling of 18301928492 in words is "eighteen billion, three hundred one million, nine hundred twenty-eight thousand, four hundred ninety-two".

Divisors: 1 2 4 37 43 74 86 148 172 241 482 964 1591 3182 6364 8917 10363 11933 17834 20726 23866 35668 41452 47732 383431 441521 513119 766862 883042 1026238 1533724 1766084 2052476 2875853 5751706 11503412 18985403 37970806 75941612 106406561 123661679 212813122 247323358 425626244 494646716 4575482123 9150964246 18301928492