1918379356 has 12 divisors (see below), whose sum is σ = 3358932192. Its totient is φ = 958684448.

The previous prime is 1918379329. The next prime is 1918379371. The reversal of 1918379356 is 6539738191.

It is a happy number.

It is a congruent 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, 117700 + ... + 133003.

It is an arithmetic number, because the mean of its divisors is an integer number (279911016).

Almost surely, 2^1918379356 is an apocalyptic number.

It is an amenable number.

1918379356 is a deficient number, since it is larger than the sum of its proper divisors (1440552836).

1918379356 is a wasteful number, since it uses less digits than its factorization.

1918379356 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 252620 (or 252618 counting only the distinct ones).

The product of its digits is 1224720, while the sum is 52.

The square root of 1918379356 is about 43799.3077114239. The cubic root of 1918379356 is about 1242.5432013232.

The spelling of 1918379356 in words is "one billion, nine hundred eighteen million, three hundred seventy-nine thousand, three hundred fifty-six".