870500001638 has 16 divisors (see below), whose sum is σ = 1318410722304. Its totient is φ = 431032584840.

The previous prime is 870500001629. The next prime is 870500001653. The reversal of 870500001638 is 836100005078.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 86678 + ... + 1322313.

It is an arithmetic number, because the mean of its divisors is an integer number (82400670144).

Almost surely, 2^870500001638 is an apocalyptic number.

870500001638 is a deficient number, since it is larger than the sum of its proper divisors (447910720666).

870500001638 is a wasteful number, since it uses less digits than its factorization.

870500001638 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1411987.

The product of its (nonzero) digits is 40320, while the sum is 38.

The spelling of 870500001638 in words is "eight hundred seventy billion, five hundred million, one thousand, six hundred thirty-eight".