1916889056 has 24 divisors (see below), whose sum is σ = 3775413600. Its totient is φ = 958053888.

The previous prime is 1916889047. The next prime is 1916889083. The reversal of 1916889056 is 6509886191.

It is a super-2 number, since 2×1916889056² = 7348927306025142272, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1916888989 and 1916889007.

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, 77720 + ... + 99368.

It is an arithmetic number, because the mean of its divisors is an integer number (157308900).

Almost surely, 2^1916889056 is an apocalyptic number.

1916889056 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1916889056 is a deficient number, since it is larger than the sum of its proper divisors (1858524544).

1916889056 is a wasteful number, since it uses less digits than its factorization.

1916889056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24426 (or 24418 counting only the distinct ones).

The product of its (nonzero) digits is 933120, while the sum is 53.

The square root of 1916889056 is about 43782.2915800441. The cubic root of 1916889056 is about 1242.2213598948.

The spelling of 1916889056 in words is "one billion, nine hundred sixteen million, eight hundred eighty-nine thousand, fifty-six".