18913400676 has 27 divisors (see below), whose sum is σ = 47810959833. Its totient is φ = 6304191840.

The previous prime is 18913400663. The next prime is 18913400683. The reversal of 18913400676 is 67600431981.

It is a happy number.

The square root of 18913400676 is 137526.

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

18913400676 is a `hidden beast` number, since 189 + 1 + 3 + 400 + 67 + 6 = 666.

It can be written as a sum of positive squares in only one way, i.e., 8897394276 + 10016006400 = 94326^2 + 100080^2 .

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, 813696 + ... + 836616.

Almost surely, 2^18913400676 is an apocalyptic number.

18913400676 is the 137526-th square number.

It is an amenable number.

18913400676 is an abundant number, since it is smaller than the sum of its proper divisors (28897559157).

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

18913400676 is an frugal number, since it uses more digits than its factorization.

18913400676 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45852 (or 22926 counting only the distinct ones).

The product of its (nonzero) digits is 217728, while the sum is 45.

The spelling of 18913400676 in words is "eighteen billion, nine hundred thirteen million, four hundred thousand, six hundred seventy-six".