18966022952 has 32 divisors (see below), whose sum is σ = 36892992000. Its totient is φ = 9130968000.

The previous prime is 18966022937. The next prime is 18966022973. The reversal of 18966022952 is 25922066981.

It is a self number, because there is not a number n which added to its sum of digits gives 18966022952.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 142799 + ... + 241502.

It is an arithmetic number, because the mean of its divisors is an integer number (1152906000).

Almost surely, 2^18966022952 is an apocalyptic number.

It is an amenable number.

18966022952 is a deficient number, since it is larger than the sum of its proper divisors (17926969048).

18966022952 is a wasteful number, since it uses less digits than its factorization.

18966022952 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 384537 (or 384533 counting only the distinct ones).

The product of its (nonzero) digits is 933120, while the sum is 50.

The spelling of 18966022952 in words is "eighteen billion, nine hundred sixty-six million, twenty-two thousand, nine hundred fifty-two".