1151899056 has 600 divisors, whose sum is σ = 4525866576. Its totient is φ = 278691840.

The previous prime is 1151899043. The next prime is 1151899069. The reversal of 1151899056 is 6509981511.

It is an interprime number because it is at equal distance from previous prime (1151899043) and next prime (1151899069).

It is a super-2 number, since 2×1151899056² = 2653742870427382272, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 119 ways as a sum of consecutive naturals, for example, 11875200 + ... + 11875296.

Almost surely, 2^1151899056 is an apocalyptic number.

1151899056 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1151899056, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2262933288).

1151899056 is an abundant number, since it is smaller than the sum of its proper divisors (3373967520).

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

1151899056 is a wasteful number, since it uses less digits than its factorization.

1151899056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 159 (or 137 counting only the distinct ones).

The product of its (nonzero) digits is 97200, while the sum is 45.

The square root of 1151899056 is about 33939.6384188164. The cubic root of 1151899056 is about 1048.2659377939.

The spelling of 1151899056 in words is "one billion, one hundred fifty-one million, eight hundred ninety-nine thousand, fifty-six".