1918856336 has 20 divisors (see below), whose sum is σ = 3722118912. Its totient is φ = 958309536.

The previous prime is 1918856327. The next prime is 1918856353. The reversal of 1918856336 is 6336588191.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 55676 + ... + 83291.

Almost surely, 2^1918856336 is an apocalyptic number.

1918856336 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1918856336 is a deficient number, since it is larger than the sum of its proper divisors (1803262576).

1918856336 is a wasteful number, since it uses less digits than its factorization.

1918856336 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 139838 (or 139832 counting only the distinct ones).

The product of its digits is 933120, while the sum is 50.

The square root of 1918856336 is about 43804.7524362369. The cubic root of 1918856336 is about 1242.6461735084.

The spelling of 1918856336 in words is "one billion, nine hundred eighteen million, eight hundred fifty-six thousand, three hundred thirty-six".