18434432160 has 72 divisors (see below), whose sum is σ = 62907504660. Its totient is φ = 4915848192.

The previous prime is 18434432101. The next prime is 18434432183. The reversal of 18434432160 is 6123443481.

18434432160 is a `hidden beast` number, since 1 + 8 + 434 + 4 + 3 + 216 + 0 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 18397124496 + 37307664 = 135636^2 + 6108^2 .

It is a tau number, because it is divible by the number of its divisors (72).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6399405 + ... + 6402284.

Almost surely, 2^18434432160 is an apocalyptic number.

18434432160 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

18434432160 is an abundant number, since it is smaller than the sum of its proper divisors (44473072500).

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

18434432160 is a wasteful number, since it uses less digits than its factorization.

18434432160 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12801710 (or 12801699 counting only the distinct ones).

The product of its (nonzero) digits is 55296, while the sum is 36.

The spelling of 18434432160 in words is "eighteen billion, four hundred thirty-four million, four hundred thirty-two thousand, one hundred sixty".