18864970236 has 72 divisors (see below), whose sum is σ = 54515683040. Its totient is φ = 5388322176.

The previous prime is 18864970171. The next prime is 18864970303. The reversal of 18864970236 is 63207946881.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 967350 + ... + 986658.

Almost surely, 2^18864970236 is an apocalyptic number.

It is an amenable number.

18864970236 is an abundant number, since it is smaller than the sum of its proper divisors (35650712804).

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

18864970236 is a wasteful number, since it uses less digits than its factorization.

18864970236 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23203 (or 23198 counting only the distinct ones).

The product of its (nonzero) digits is 3483648, while the sum is 54.

The spelling of 18864970236 in words is "eighteen billion, eight hundred sixty-four million, nine hundred seventy thousand, two hundred thirty-six".