1557166064 has 10 divisors (see below), whose sum is σ = 3017009280. Its totient is φ = 778583024.

The previous prime is 1557166063. The next prime is 1557166067. The reversal of 1557166064 is 4606617551.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1557166063) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 48661424 + ... + 48661455.

It is an arithmetic number, because the mean of its divisors is an integer number (301700928).

Almost surely, 2^1557166064 is an apocalyptic number.

It is an amenable number.

1557166064 is a deficient number, since it is larger than the sum of its proper divisors (1459843216).

1557166064 is an equidigital number, since it uses as much as digits as its factorization.

1557166064 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 97322887 (or 97322881 counting only the distinct ones).

The product of its (nonzero) digits is 151200, while the sum is 41.

The square root of 1557166064 is about 39460.9435264794. The cubic root of 1557166064 is about 1159.0752796809.

The spelling of 1557166064 in words is "one billion, five hundred fifty-seven million, one hundred sixty-six thousand, sixty-four".