1870633138 has 12 divisors (see below), whose sum is σ = 3084226110. Its totient is φ = 850287680.

The previous prime is 1870633123. The next prime is 1870633147. The reversal of 1870633138 is 8313360781.

It can be written as a sum of positive squares in only one way, i.e., 1388084049 + 482549089 = 37257^2 + 21967^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 1870633138.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3864703 + ... + 3865186.

Almost surely, 2^1870633138 is an apocalyptic number.

1870633138 is a deficient number, since it is larger than the sum of its proper divisors (1213592972).

1870633138 is a wasteful number, since it uses less digits than its factorization.

1870633138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7729913 (or 7729902 counting only the distinct ones).

The product of its (nonzero) digits is 72576, while the sum is 40.

The square root of 1870633138 is about 43250.8166165681. The cubic root of 1870633138 is about 1232.1479945513.

The spelling of 1870633138 in words is "one billion, eight hundred seventy million, six hundred thirty-three thousand, one hundred thirty-eight".