5157311818 has 8 divisors (see below), whose sum is σ = 7736272740. Its totient is φ = 2578554240.

The previous prime is 5157311771. The next prime is 5157311843. The reversal of 5157311818 is 8181137515.

It can be written as a sum of positive squares in 2 ways, for example, as 3164850049 + 1992461769 = 56257^2 + 44637^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

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, 70368 + ... + 123556.

Almost surely, 2^5157311818 is an apocalyptic number.

5157311818 is a deficient number, since it is larger than the sum of its proper divisors (2578960922).

5157311818 is a wasteful number, since it uses less digits than its factorization.

5157311818 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 101672.

The product of its digits is 33600, while the sum is 40.

The square root of 5157311818 is about 71814.4262526688. The cubic root of 5157311818 is about 1727.7243870286.

The spelling of 5157311818 in words is "five billion, one hundred fifty-seven million, three hundred eleven thousand, eight hundred eighteen".