18745618116 has 12 divisors (see below), whose sum is σ = 43739775632. Its totient is φ = 6248539368.

The previous prime is 18745618093. The next prime is 18745618117. The reversal of 18745618116 is 61181654781.

It is a tau number, because it is divible by the number of its divisors (12).

It is not an unprimeable number, because it can be changed into a prime (18745618117) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 781067410 + ... + 781067433.

Almost surely, 2^18745618116 is an apocalyptic number.

It is an amenable number.

18745618116 is an abundant number, since it is smaller than the sum of its proper divisors (24994157516).

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

18745618116 is a wasteful number, since it uses less digits than its factorization.

18745618116 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1562134850 (or 1562134848 counting only the distinct ones).

The product of its digits is 322560, while the sum is 48.

The spelling of 18745618116 in words is "eighteen billion, seven hundred forty-five million, six hundred eighteen thousand, one hundred sixteen".