5181770879 has 4 divisors (see below), whose sum is σ = 5182195080. Its totient is φ = 5181346680.

The previous prime is 5181770861. The next prime is 5181770897. The reversal of 5181770879 is 9780771815.

It is a happy number.

5181770879 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (5181770861) and next prime (5181770897).

It is a cyclic number.

It is not a de Polignac number, because 5181770879 - 2⁸ = 5181770623 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 5181770879.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5181770849) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 193217 + ... + 218394.

It is an arithmetic number, because the mean of its divisors is an integer number (1295548770).

Almost surely, 2^5181770879 is an apocalyptic number.

5181770879 is a deficient number, since it is larger than the sum of its proper divisors (424201).

5181770879 is a wasteful number, since it uses less digits than its factorization.

5181770879 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 424200.

The product of its (nonzero) digits is 987840, while the sum is 53.

The square root of 5181770879 is about 71984.5183285962. The cubic root of 5181770879 is about 1730.4513817667.

The spelling of 5181770879 in words is "five billion, one hundred eighty-one million, seven hundred seventy thousand, eight hundred seventy-nine".