5160931818 has 16 divisors (see below), whose sum is σ = 11796415680. Its totient is φ = 1474551936.

The previous prime is 5160931813. The next prime is 5160931847. The reversal of 5160931818 is 8181390615.

It is a Harshad number since it is a multiple of its sum of digits (42), and also a Moran number because the ratio is a prime number: 122879329 = 5160931818 / (5 + 1 + 6 + 0 + 9 + 3 + 1 + 8 + 1 + 8).

It is a self number, because there is not a number n which added to its sum of digits gives 5160931818.

It is not an unprimeable number, because it can be changed into a prime (5160931813) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 61439623 + ... + 61439706.

It is an arithmetic number, because the mean of its divisors is an integer number (737275980).

Almost surely, 2^5160931818 is an apocalyptic number.

5160931818 is an abundant number, since it is smaller than the sum of its proper divisors (6635483862).

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

5160931818 is a wasteful number, since it uses less digits than its factorization.

5160931818 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 122879341.

The product of its (nonzero) digits is 51840, while the sum is 42.

The square root of 5160931818 is about 71839.6256810961. The cubic root of 5160931818 is about 1728.1285316506.

The spelling of 5160931818 in words is "five billion, one hundred sixty million, nine hundred thirty-one thousand, eight hundred eighteen".