1557541464 has 16 divisors (see below), whose sum is σ = 3893853720. Its totient is φ = 519180480.

The previous prime is 1557541457. The next prime is 1557541499. The reversal of 1557541464 is 4641457551.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 32448757 + ... + 32448804.

Almost surely, 2^1557541464 is an apocalyptic number.

It is an amenable number.

1557541464 is an abundant number, since it is smaller than the sum of its proper divisors (2336312256).

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

1557541464 is a wasteful number, since it uses less digits than its factorization.

1557541464 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64897570 (or 64897566 counting only the distinct ones).

The product of its digits is 336000, while the sum is 42.

The square root of 1557541464 is about 39465.6998417613. The cubic root of 1557541464 is about 1159.1684150908.

The spelling of 1557541464 in words is "one billion, five hundred fifty-seven million, five hundred forty-one thousand, four hundred sixty-four".