1918232056 has 32 divisors (see below), whose sum is σ = 3955775040. Its totient is φ = 866498688.

The previous prime is 1918232051. The next prime is 1918232087. The reversal of 1918232056 is 6502328191.

It is a super-2 number, since 2×1918232056² = 7359228441331974272, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1918232051) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 191331 + ... + 201106.

It is an arithmetic number, because the mean of its divisors is an integer number (123617970).

Almost surely, 2^1918232056 is an apocalyptic number.

It is an amenable number.

1918232056 is an abundant number, since it is smaller than the sum of its proper divisors (2037542984).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1918232056 is a wasteful number, since it uses less digits than its factorization.

1918232056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 392503 (or 392499 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 37.

The square root of 1918232056 is about 43797.6261457171. The cubic root of 1918232056 is about 1242.5113982116.

The spelling of 1918232056 in words is "one billion, nine hundred eighteen million, two hundred thirty-two thousand, fifty-six".