769495813 has 2 divisors, whose sum is σ = 769495814. Its totient is φ = 769495812.

The previous prime is 769495757. The next prime is 769495823. The reversal of 769495813 is 318594967.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 629357569 + 140138244 = 25087^2 + 11838^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-769495813 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (769495823) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 384747906 + 384747907.

It is an arithmetic number, because the mean of its divisors is an integer number (384747907).

Almost surely, 2^769495813 is an apocalyptic number.

It is an amenable number.

769495813 is a deficient number, since it is larger than the sum of its proper divisors (1).

769495813 is an equidigital number, since it uses as much as digits as its factorization.

769495813 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1632960, while the sum is 52.

The square root of 769495813 is about 27739.7875442477. The cubic root of 769495813 is about 916.3655495960.

The spelling of 769495813 in words is "seven hundred sixty-nine million, four hundred ninety-five thousand, eight hundred thirteen".