1151878920 has 64 divisors (see below), whose sum is σ = 3460104000. Its totient is φ = 306770688.

The previous prime is 1151878907. The next prime is 1151878943. The reversal of 1151878920 is 298781511.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 93691 + ... + 105269.

It is an arithmetic number, because the mean of its divisors is an integer number (54064125).

Almost surely, 2^1151878920 is an apocalyptic number.

1151878920 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1151878920 is an abundant number, since it is smaller than the sum of its proper divisors (2308225080).

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

1151878920 is a wasteful number, since it uses less digits than its factorization.

1151878920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12422 (or 12418 counting only the distinct ones).

The product of its (nonzero) digits is 40320, while the sum is 42.

The square root of 1151878920 is about 33939.3417732283. The cubic root of 1151878920 is about 1048.2598296181.

The spelling of 1151878920 in words is "one billion, one hundred fifty-one million, eight hundred seventy-eight thousand, nine hundred twenty".