18234115664 has 20 divisors (see below), whose sum is σ = 35349470004. Its totient is φ = 9111671808.

The previous prime is 18234115657. The next prime is 18234115687. The reversal of 18234115664 is 46651143281.

It can be written as a sum of positive squares in 2 ways, for example, as 14046990400 + 4187125264 = 118520^2 + 64708^2 .

It is a congruent number.

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, 308627 + ... + 362930.

Almost surely, 2^18234115664 is an apocalyptic number.

It is an amenable number.

18234115664 is a deficient number, since it is larger than the sum of its proper divisors (17115354340).

18234115664 is a wasteful number, since it uses less digits than its factorization.

18234115664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 673262 (or 673256 counting only the distinct ones).

The product of its digits is 138240, while the sum is 41.

The spelling of 18234115664 in words is "eighteen billion, two hundred thirty-four million, one hundred fifteen thousand, six hundred sixty-four".