1157040780 has 48 divisors (see below), whose sum is σ = 3702531840. Its totient is φ = 264466368.

The previous prime is 1157040769. The next prime is 1157040793. The reversal of 1157040780 is 870407511.

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, 1377010 + ... + 1377849.

It is an arithmetic number, because the mean of its divisors is an integer number (77136080).

Almost surely, 2^1157040780 is an apocalyptic number.

1157040780 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1157040780 is an abundant number, since it is smaller than the sum of its proper divisors (2545491060).

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

1157040780 is a wasteful number, since it uses less digits than its factorization.

1157040780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2754878 (or 2754876 counting only the distinct ones).

The product of its (nonzero) digits is 7840, while the sum is 33.

The square root of 1157040780 is about 34015.3021447701. The cubic root of 1157040780 is about 1049.8233353568.

The spelling of 1157040780 in words is "one billion, one hundred fifty-seven million, forty thousand, seven hundred eighty".