1157837478 has 16 divisors (see below), whose sum is σ = 2646485760. Its totient is φ = 330810696.

The previous prime is 1157837459. The next prime is 1157837497. The reversal of 1157837478 is 8747387511.

It is an interprime number because it is at equal distance from previous prime (1157837459) and next prime (1157837497).

It is a super-2 number, since 2×1157837478² = 2681175250922800968, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1157837478.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13783738 + ... + 13783821.

It is an arithmetic number, because the mean of its divisors is an integer number (165405360).

Almost surely, 2^1157837478 is an apocalyptic number.

1157837478 is an abundant number, since it is smaller than the sum of its proper divisors (1488648282).

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

1157837478 is a wasteful number, since it uses less digits than its factorization.

1157837478 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27567571.

The product of its digits is 1317120, while the sum is 51.

The square root of 1157837478 is about 34027.0110059641. The cubic root of 1157837478 is about 1050.0642373398.

The spelling of 1157837478 in words is "one billion, one hundred fifty-seven million, eight hundred thirty-seven thousand, four hundred seventy-eight".