2138865134 has 32 divisors (see below), whose sum is σ = 3695500800. Its totient is φ = 909466272.

The previous prime is 2138865103. The next prime is 2138865167. The reversal of 2138865134 is 4315688312.

It is a super-2 number, since 2×2138865134² = 9149488122881675912, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2138865091 and 2138865100.

It is a congruent number.

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, 1233332 + ... + 1235064.

It is an arithmetic number, because the mean of its divisors is an integer number (115484400).

Almost surely, 2^2138865134 is an apocalyptic number.

2138865134 is a deficient number, since it is larger than the sum of its proper divisors (1556635666).

2138865134 is a wasteful number, since it uses less digits than its factorization.

2138865134 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2384.

The product of its digits is 138240, while the sum is 41.

The square root of 2138865134 is about 46247.8662642938. The cubic root of 2138865134 is about 1288.4309055347.

The spelling of 2138865134 in words is "two billion, one hundred thirty-eight million, eight hundred sixty-five thousand, one hundred thirty-four".