1577136668 has 12 divisors (see below), whose sum is σ = 2827306272. Its totient is φ = 769334880.

The previous prime is 1577136637. The next prime is 1577136679. The reversal of 1577136668 is 8666317751.

It is a hoax number, since the sum of its digits (50) coincides with the sum of the digits of its distinct prime factors.

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, 4808180 + ... + 4808507.

It is an arithmetic number, because the mean of its divisors is an integer number (235608856).

Almost surely, 2^1577136668 is an apocalyptic number.

It is an amenable number.

1577136668 is a deficient number, since it is larger than the sum of its proper divisors (1250169604).

1577136668 is a wasteful number, since it uses less digits than its factorization.

1577136668 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9616732 (or 9616730 counting only the distinct ones).

The product of its digits is 1270080, while the sum is 50.

The square root of 1577136668 is about 39713.1800288015. The cubic root of 1577136668 is about 1164.0092808351.

The spelling of 1577136668 in words is "one billion, five hundred seventy-seven million, one hundred thirty-six thousand, six hundred sixty-eight".