2138893834 has 32 divisors (see below), whose sum is σ = 4037423616. Its totient is φ = 825540720.

The previous prime is 2138893829. The next prime is 2138893849. The reversal of 2138893834 is 4383988312.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 48424 + ... + 81379.

It is an arithmetic number, because the mean of its divisors is an integer number (126169488).

Almost surely, 2^2138893834 is an apocalyptic number.

2138893834 is a deficient number, since it is larger than the sum of its proper divisors (1898529782).

2138893834 is a wasteful number, since it uses less digits than its factorization.

2138893834 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 129930.

The product of its digits is 995328, while the sum is 49.

The square root of 2138893834 is about 46248.1765478381. The cubic root of 2138893834 is about 1288.4366683730.

The spelling of 2138893834 in words is "two billion, one hundred thirty-eight million, eight hundred ninety-three thousand, eight hundred thirty-four".