1557152079 has 16 divisors (see below), whose sum is σ = 2430677760. Its totient is φ = 868098240.

The previous prime is 1557152059. The next prime is 1557152081. The reversal of 1557152079 is 9702517551.

It is not a de Polignac number, because 1557152079 - 2⁸ = 1557151823 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1557152079.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1557152029) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 903409 + ... + 905130.

It is an arithmetic number, because the mean of its divisors is an integer number (151917360).

Almost surely, 2^1557152079 is an apocalyptic number.

1557152079 is a deficient number, since it is larger than the sum of its proper divisors (873525681).

1557152079 is a wasteful number, since it uses less digits than its factorization.

1557152079 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1808590.

The product of its (nonzero) digits is 110250, while the sum is 42.

The square root of 1557152079 is about 39460.7663255543. The cubic root of 1557152079 is about 1159.0718097628.

The spelling of 1557152079 in words is "one billion, five hundred fifty-seven million, one hundred fifty-two thousand, seventy-nine".