5181373813 has 16 divisors (see below), whose sum is σ = 6510772224. Its totient is φ = 4005635760.

The previous prime is 5181373807. The next prime is 5181373837. The reversal of 5181373813 is 3183731815.

It is a de Polignac number, because none of the positive numbers 2^k-5181373813 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5181371813) 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, 255145 + ... + 274702.

It is an arithmetic number, because the mean of its divisors is an integer number (406923264).

Almost surely, 2^5181373813 is an apocalyptic number.

It is an amenable number.

5181373813 is a deficient number, since it is larger than the sum of its proper divisors (1329398411).

5181373813 is a wasteful number, since it uses less digits than its factorization.

5181373813 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 529992.

The product of its digits is 60480, while the sum is 40.

The square root of 5181373813 is about 71981.7602799487. The cubic root of 5181373813 is about 1730.4071805998.

The spelling of 5181373813 in words is "five billion, one hundred eighty-one million, three hundred seventy-three thousand, eight hundred thirteen".