18618056704 has 153 divisors (see below), whose sum is σ = 41327865939. Its totient is φ = 8383365120.

The previous prime is 18618056621. The next prime is 18618056789. The reversal of 18618056704 is 40765081681.

The square root of 18618056704 is 136448.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 4 ways, for example, as 12401049600 + 6217007104 = 111360^2 + 78848^2 .

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 454098924 + ... + 454098964.

Almost surely, 2^18618056704 is an apocalyptic number.

18618056704 is the 136448-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 18618056704

18618056704 is an abundant number, since it is smaller than the sum of its proper divisors (22709809235).

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

18618056704 is an frugal number, since it uses more digits than its factorization.

18618056704 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 140 (or 56 counting only the distinct ones).

The product of its (nonzero) digits is 322560, while the sum is 46.

The spelling of 18618056704 in words is "eighteen billion, six hundred eighteen million, fifty-six thousand, seven hundred four".