8157160489 has 9 divisors (see below), whose sum is σ = 8387018661. Its totient is φ = 7933445280.

The previous prime is 8157160483. The next prime is 8157160511. The reversal of 8157160489 is 9840617518.

The square root of 8157160489 is 90317.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 4 ways, for example, as 1625625 + 8155534864 = 1275^2 + 90308^2 .

It is not a de Polignac number, because 8157160489 - 2²⁹ = 7620289577 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8157160483) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 3340509 + ... + 3342949.

Almost surely, 2^8157160489 is an apocalyptic number.

8157160489 is the 90317-th square number.

8157160489 is the 45159-th centered octagonal number.

It is an amenable number.

8157160489 is a deficient number, since it is larger than the sum of its proper divisors (229858172).

8157160489 is an frugal number, since it uses more digits than its factorization.

8157160489 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4956 (or 2478 counting only the distinct ones).

The product of its (nonzero) digits is 483840, while the sum is 49.

The cubic root of 8157160489 is about 2013.0118694580.

Multiplying 8157160489 by its sum of digits (49), we get a square (399700863961 = 632219²).

The spelling of 8157160489 in words is "eight billion, one hundred fifty-seven million, one hundred sixty thousand, four hundred eighty-nine".