6131864779 has 4 divisors (see below), whose sum is σ = 6140299984. Its totient is φ = 6123429576.

The previous prime is 6131864771. The next prime is 6131864789. The reversal of 6131864779 is 9774681316.

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

It is a cyclic number.

It is not a de Polignac number, because 6131864779 - 2³ = 6131864771 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6131864771) 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, 4216512 + ... + 4217965.

It is an arithmetic number, because the mean of its divisors is an integer number (1535074996).

Almost surely, 2^6131864779 is an apocalyptic number.

6131864779 is a deficient number, since it is larger than the sum of its proper divisors (8435205).

6131864779 is an equidigital number, since it uses as much as digits as its factorization.

6131864779 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8435204.

The product of its digits is 1524096, while the sum is 52.

The square root of 6131864779 is about 78306.2243949994. The cubic root of 6131864779 is about 1830.3361460603.

The spelling of 6131864779 in words is "six billion, one hundred thirty-one million, eight hundred sixty-four thousand, seven hundred seventy-nine".