18747969239 has 8 divisors (see below), whose sum is σ = 18895429872. Its totient is φ = 18600574720.

The previous prime is 18747969217. The next prime is 18747969259. The reversal of 18747969239 is 93296974781.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 18747969239 - 2²⁴ = 18731192023 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18747969209) 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, 661157 + ... + 688929.

It is an arithmetic number, because the mean of its divisors is an integer number (2361928734).

Almost surely, 2^18747969239 is an apocalyptic number.

18747969239 is a deficient number, since it is larger than the sum of its proper divisors (147460633).

18747969239 is a wasteful number, since it uses less digits than its factorization.

18747969239 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33057.

The product of its digits is 41150592, while the sum is 65.

The spelling of 18747969239 in words is "eighteen billion, seven hundred forty-seven million, nine hundred sixty-nine thousand, two hundred thirty-nine".