76918813 has 2 divisors, whose sum is σ = 76918814. Its totient is φ = 76918812.

The previous prime is 76918789. The next prime is 76918823. The reversal of 76918813 is 31881967.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 41242084 + 35676729 = 6422^2 + 5973^2 .

It is a cyclic number.

It is not a de Polignac number, because 76918813 - 2¹⁷ = 76787741 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 76918813.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (76918823) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38459406 + 38459407.

It is an arithmetic number, because the mean of its divisors is an integer number (38459407).

Almost surely, 2^76918813 is an apocalyptic number.

It is an amenable number.

76918813 is a deficient number, since it is larger than the sum of its proper divisors (1).

76918813 is an equidigital number, since it uses as much as digits as its factorization.

76918813 is an evil number, because the sum of its binary digits is even.

The product of its digits is 72576, while the sum is 43.

The square root of 76918813 is about 8770.3371086863. The cubic root of 76918813 is about 425.2825120476.

The spelling of 76918813 in words is "seventy-six million, nine hundred eighteen thousand, eight hundred thirteen".