188113939 has 16 divisors (see below), whose sum is σ = 206049312. Its totient is φ = 170696448.

The previous prime is 188113903. The next prime is 188113951. The reversal of 188113939 is 939311881.

It is not a de Polignac number, because 188113939 - 2¹⁷ = 187982867 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 188113895 and 188113904.

It is not an unprimeable number, because it can be changed into a prime (188113969) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 337449 + ... + 338005.

It is an arithmetic number, because the mean of its divisors is an integer number (12878082).

Almost surely, 2^188113939 is an apocalyptic number.

188113939 is a deficient number, since it is larger than the sum of its proper divisors (17935373).

188113939 is a wasteful number, since it uses less digits than its factorization.

188113939 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 966.

The product of its digits is 46656, while the sum is 43.

The square root of 188113939 is about 13715.4634992770. The cubic root of 188113939 is about 572.9811382165.

The spelling of 188113939 in words is "one hundred eighty-eight million, one hundred thirteen thousand, nine hundred thirty-nine".