778082413 has 2 divisors, whose sum is σ = 778082414. Its totient is φ = 778082412.

The previous prime is 778082363. The next prime is 778082467. The reversal of 778082413 is 314280877.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 697118409 + 80964004 = 26403^2 + 8998^2 .

It is a cyclic number.

It is not a de Polignac number, because 778082413 - 2¹⁷ = 777951341 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (778082483) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 389041206 + 389041207.

It is an arithmetic number, because the mean of its divisors is an integer number (389041207).

Almost surely, 2^778082413 is an apocalyptic number.

It is an amenable number.

778082413 is a deficient number, since it is larger than the sum of its proper divisors (1).

778082413 is an equidigital number, since it uses as much as digits as its factorization.

778082413 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 75264, while the sum is 40.

The square root of 778082413 is about 27894.1286474412. The cubic root of 778082413 is about 919.7614429519.

The spelling of 778082413 in words is "seven hundred seventy-eight million, eighty-two thousand, four hundred thirteen".