1868635628942 has 16 divisors (see below), whose sum is σ = 2807690778720. Its totient is φ = 932739120768.

The previous prime is 1868635628921. The next prime is 1868635628953. The reversal of 1868635628942 is 2498265368681.

It is a happy number.

It is a super-2 number, since 2×1868635628942² (a number of 25 digits) contains 22 as substring.

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, 9186434 + ... + 9387642.

It is an arithmetic number, because the mean of its divisors is an integer number (175480673670).

Almost surely, 2^{1868635628942} is an apocalyptic number.

1868635628942 is a deficient number, since it is larger than the sum of its proper divisors (939055149778).

1868635628942 is a wasteful number, since it uses less digits than its factorization.

1868635628942 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 209035.

The product of its digits is 238878720, while the sum is 68.

The spelling of 1868635628942 in words is "one trillion, eight hundred sixty-eight billion, six hundred thirty-five million, six hundred twenty-eight thousand, nine hundred forty-two".