2138979675 has 24 divisors (see below), whose sum is σ = 4041654016. Its totient is φ = 977819040.

The previous prime is 2138979617. The next prime is 2138979683. The reversal of 2138979675 is 5769798312.

It is not a de Polignac number, because 2138979675 - 2⁷ = 2138979547 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2036599 + ... + 2037648.

Almost surely, 2^2138979675 is an apocalyptic number.

2138979675 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

2138979675 is a deficient number, since it is larger than the sum of its proper divisors (1902674341).

2138979675 is a wasteful number, since it uses less digits than its factorization.

2138979675 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4074267 (or 4074262 counting only the distinct ones).

The product of its digits is 5715360, while the sum is 57.

The square root of 2138979675 is about 46249.1045859269. The cubic root of 2138979675 is about 1288.4539045740.

The spelling of 2138979675 in words is "two billion, one hundred thirty-eight million, nine hundred seventy-nine thousand, six hundred seventy-five".