18002671939 has 16 divisors (see below), whose sum is σ = 21363134400. Its totient is φ = 14843332224.

The previous prime is 18002671913. The next prime is 18002671963. The reversal of 18002671939 is 93917620081.

It is a happy number.

It is not a de Polignac number, because 18002671939 - 2⁷ = 18002671811 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18002671979) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 110232 + ... + 219445.

It is an arithmetic number, because the mean of its divisors is an integer number (1335195900).

Almost surely, 2^18002671939 is an apocalyptic number.

18002671939 is a deficient number, since it is larger than the sum of its proper divisors (3360462461).

18002671939 is a wasteful number, since it uses less digits than its factorization.

18002671939 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 329982.

The product of its (nonzero) digits is 163296, while the sum is 46.

The spelling of 18002671939 in words is "eighteen billion, two million, six hundred seventy-one thousand, nine hundred thirty-nine".