1577668044 has 12 divisors (see below), whose sum is σ = 3681225464. Its totient is φ = 525889344.

The previous prime is 1577668039. The next prime is 1577668073. The reversal of 1577668044 is 4408667751.

It is a tau number, because it is divible by the number of its divisors (12).

It is a junction number, because it is equal to n+sod(n) for n = 1577667984 and 1577668002.

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, 65736157 + ... + 65736180.

Almost surely, 2^1577668044 is an apocalyptic number.

It is an amenable number.

1577668044 is an abundant number, since it is smaller than the sum of its proper divisors (2103557420).

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

1577668044 is a wasteful number, since it uses less digits than its factorization.

1577668044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 131472344 (or 131472342 counting only the distinct ones).

The product of its (nonzero) digits is 1128960, while the sum is 48.

The square root of 1577668044 is about 39719.8696372483. The cubic root of 1577668044 is about 1164.1399939085.

The spelling of 1577668044 in words is "one billion, five hundred seventy-seven million, six hundred sixty-eight thousand, forty-four".