1157666532 has 48 divisors (see below), whose sum is σ = 2971182144. Its totient is φ = 350803200.

The previous prime is 1157666513. The next prime is 1157666537. The reversal of 1157666532 is 2356667511.

It is not an unprimeable number, because it can be changed into a prime (1157666537) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20269 + ... + 52212.

It is an arithmetic number, because the mean of its divisors is an integer number (61899628).

Almost surely, 2^1157666532 is an apocalyptic number.

1157666532 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1157666532 is an abundant number, since it is smaller than the sum of its proper divisors (1813515612).

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

1157666532 is a wasteful number, since it uses less digits than its factorization.

1157666532 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72521 (or 72497 counting only the distinct ones).

The product of its digits is 226800, while the sum is 42.

The square root of 1157666532 is about 34024.4989970462. The cubic root of 1157666532 is about 1050.0125567659.

The spelling of 1157666532 in words is "one billion, one hundred fifty-seven million, six hundred sixty-six thousand, five hundred thirty-two".