18425916688 has 80 divisors (see below), whose sum is σ = 36887639040. Its totient is φ = 8912793600.

The previous prime is 18425916671. The next prime is 18425916689. The reversal of 18425916688 is 88661952481.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (18425916689) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18081843 + ... + 18082861.

It is an arithmetic number, because the mean of its divisors is an integer number (461095488).

Almost surely, 2^18425916688 is an apocalyptic number.

It is an amenable number.

18425916688 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

18425916688 is a wasteful number, since it uses less digits than its factorization.

18425916688 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1376 (or 1370 counting only the distinct ones).

The product of its digits is 6635520, while the sum is 58.

The spelling of 18425916688 in words is "eighteen billion, four hundred twenty-five million, nine hundred sixteen thousand, six hundred eighty-eight".