18160555618 has 8 divisors (see below), whose sum is σ = 27490749660. Its totient is φ = 8996972400.

The previous prime is 18160555607. The next prime is 18160555639. The reversal of 18160555618 is 81655506181.

It can be written as a sum of positive squares in 2 ways, for example, as 17804365489 + 356190129 = 133433^2 + 18873^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 41652433 + ... + 41652868.

Almost surely, 2^18160555618 is an apocalyptic number.

18160555618 is a deficient number, since it is larger than the sum of its proper divisors (9330194042).

18160555618 is a wasteful number, since it uses less digits than its factorization.

18160555618 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 83305412.

The product of its (nonzero) digits is 288000, while the sum is 46.

The spelling of 18160555618 in words is "eighteen billion, one hundred sixty million, five hundred fifty-five thousand, six hundred eighteen".