18172062139 has 40 divisors (see below), whose sum is σ = 23233824432. Its totient is φ = 14094501120.

The previous prime is 18172062133. The next prime is 18172062149. The reversal of 18172062139 is 93126027181.

It is not a de Polignac number, because 18172062139 - 2³ = 18172062131 is a prime.

It is not an unprimeable number, because it can be changed into a prime (18172062131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 6152287 + ... + 6155239.

Almost surely, 2^18172062139 is an apocalyptic number.

18172062139 is a deficient number, since it is larger than the sum of its proper divisors (5061762293).

18172062139 is an equidigital number, since it uses as much as digits as its factorization.

18172062139 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3225 (or 3204 counting only the distinct ones).

The product of its (nonzero) digits is 36288, while the sum is 40.

The spelling of 18172062139 in words is "eighteen billion, one hundred seventy-two million, sixty-two thousand, one hundred thirty-nine".