18879113 has 16 divisors (see below), whose sum is σ = 21814272. Its totient is φ = 16170000.

The previous prime is 18879109. The next prime is 18879121. The reversal of 18879113 is 31197881.

It is not a de Polignac number, because 18879113 - 2² = 18879109 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18879143) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17438 + ... + 18488.

It is an arithmetic number, because the mean of its divisors is an integer number (1363392).

Almost surely, 2^18879113 is an apocalyptic number.

It is an amenable number.

18879113 is a deficient number, since it is larger than the sum of its proper divisors (2935159).

18879113 is a wasteful number, since it uses less digits than its factorization.

18879113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1156.

The product of its digits is 12096, while the sum is 38.

The square root of 18879113 is about 4345.0101265705. The cubic root of 18879113 is about 266.2730392165.

The spelling of 18879113 in words is "eighteen million, eight hundred seventy-nine thousand, one hundred thirteen".