1557316164 has 24 divisors (see below), whose sum is σ = 3662353408. Its totient is φ = 515017440.

The previous prime is 1557316141. The next prime is 1557316169. The reversal of 1557316164 is 4616137551.

It is not an unprimeable number, because it can be changed into a prime (1557316169) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 509407 + ... + 512454.

Almost surely, 2^1557316164 is an apocalyptic number.

It is an amenable number.

1557316164 is an abundant number, since it is smaller than the sum of its proper divisors (2105037244).

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

1557316164 is a wasteful number, since it uses less digits than its factorization.

1557316164 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1021995 (or 1021993 counting only the distinct ones).

The product of its digits is 75600, while the sum is 39.

The square root of 1557316164 is about 39462.8453611749. The cubic root of 1557316164 is about 1159.1125207549.

The spelling of 1557316164 in words is "one billion, five hundred fifty-seven million, three hundred sixteen thousand, one hundred sixty-four".