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18153864153 = 33821818959
BaseRepresentation
bin10000111010000011…
…011111101111011001
31201212011200211222000
4100322003133233121
5244134342123103
612201220151213
71211604204435
oct207203375731
951764624860
1018153864153
117776423917
123627838509
131934083269
14c4303d9c5
15713b4caa3
hex43a0dfbd9

18153864153 has 16 divisors (see below), whose sum is σ = 26927404800. Its totient is φ = 12087820080.

The previous prime is 18153864139. The next prime is 18153864161. The reversal of 18153864153 is 35146835181.

18153864153 is a `hidden beast` number, since 1 + 8 + 1 + 538 + 64 + 1 + 53 = 666.

It is not a de Polignac number, because 18153864153 - 29 = 18153863641 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 18153864099 and 18153864108.

It is not an unprimeable number, because it can be changed into a prime (18153814153) 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, 387313 + ... + 431646.

It is an arithmetic number, because the mean of its divisors is an integer number (1682962800).

Almost surely, 218153864153 is an apocalyptic number.

It is an amenable number.

18153864153 is a deficient number, since it is larger than the sum of its proper divisors (8773540647).

18153864153 is an equidigital number, since it uses as much as digits as its factorization.

18153864153 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 819789 (or 819783 counting only the distinct ones).

The product of its digits is 345600, while the sum is 45.

The spelling of 18153864153 in words is "eighteen billion, one hundred fifty-three million, eight hundred sixty-four thousand, one hundred fifty-three".

Divisors: 1 3 9 27 821 2463 7389 22167 818959 2456877 7370631 22111893 672365339 2017096017 6051288051 18153864153