1915549056 has 48 divisors (see below), whose sum is σ = 5512195260. Its totient is φ = 638515968.

The previous prime is 1915549039. The next prime is 1915549057. The reversal of 1915549056 is 6509455191.

It is a happy number.

1915549056 is a `hidden beast` number, since 1 + 9 + 1 + 554 + 90 + 5 + 6 = 666.

It is a tau number, because it is divible by the number of its divisors (48).

It is a super-2 number, since 2×1915549056² = 7338656371884982272, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1915549057) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 830250 + ... + 832553.

Almost surely, 2^1915549056 is an apocalyptic number.

1915549056 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1915549056 is an abundant number, since it is smaller than the sum of its proper divisors (3596646204).

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

1915549056 is a wasteful number, since it uses less digits than its factorization.

1915549056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1662823 (or 1662808 counting only the distinct ones).

The product of its (nonzero) digits is 243000, while the sum is 45.

The square root of 1915549056 is about 43766.9859140426. The cubic root of 1915549056 is about 1241.9318344192.

The spelling of 1915549056 in words is "one billion, nine hundred fifteen million, five hundred forty-nine thousand, fifty-six".