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18952034091 = 3139142731849
BaseRepresentation
bin10001101001101000…
…010001011100101011
31210220210121002021120
4101221220101130223
5302303210042331
612412331510323
71240435426464
oct215150213453
953823532246
1018952034091
118045a247a1
12380abb83a3
131a30545173
14cbb04dd6b
1575dc62796
hex469a1172b

18952034091 has 16 divisors (see below), whose sum is σ = 25469808000. Its totient is φ = 12534608448.

The previous prime is 18952034081. The next prime is 18952034113. The reversal of 18952034091 is 19043025981.

It is not a de Polignac number, because 18952034091 - 213 = 18952025899 is a prime.

It is not an unprimeable number, because it can be changed into a prime (18952034051) 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, 579135 + ... + 610983.

It is an arithmetic number, because the mean of its divisors is an integer number (1591863000).

Almost surely, 218952034091 is an apocalyptic number.

18952034091 is a deficient number, since it is larger than the sum of its proper divisors (6517773909).

18952034091 is a wasteful number, since it uses less digits than its factorization.

18952034091 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33418.

The product of its (nonzero) digits is 77760, while the sum is 42.

The spelling of 18952034091 in words is "eighteen billion, nine hundred fifty-two million, thirty-four thousand, ninety-one".

Divisors: 1 3 139 417 1427 4281 31849 95547 198353 595059 4427011 13281033 45448523 136345569 6317344697 18952034091