18764872076 has 24 divisors (see below), whose sum is σ = 33169131744. Its totient is φ = 9288403200.

The previous prime is 18764872031. The next prime is 18764872079. The reversal of 18764872076 is 67027846781.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (18764872079) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 123956 + ... + 229988.

It is an arithmetic number, because the mean of its divisors is an integer number (1382047156).

Almost surely, 2^18764872076 is an apocalyptic number.

It is an amenable number.

18764872076 is a deficient number, since it is larger than the sum of its proper divisors (14404259668).

18764872076 is a wasteful number, since it uses less digits than its factorization.

18764872076 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 106481 (or 106479 counting only the distinct ones).

The product of its (nonzero) digits is 6322176, while the sum is 56.

The spelling of 18764872076 in words is "eighteen billion, seven hundred sixty-four million, eight hundred seventy-two thousand, seventy-six".