765151813 has 2 divisors, whose sum is σ = 765151814. Its totient is φ = 765151812.

The previous prime is 765151733. The next prime is 765151817. The reversal of 765151813 is 318151567.

765151813 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 763859044 + 1292769 = 27638^2 + 1137^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-765151813 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (765151817) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 382575906 + 382575907.

It is an arithmetic number, because the mean of its divisors is an integer number (382575907).

Almost surely, 2^765151813 is an apocalyptic number.

It is an amenable number.

765151813 is a deficient number, since it is larger than the sum of its proper divisors (1).

765151813 is an equidigital number, since it uses as much as digits as its factorization.

765151813 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 25200, while the sum is 37.

The square root of 765151813 is about 27661.3776410359. The cubic root of 765151813 is about 914.6379221742.

The spelling of 765151813 in words is "seven hundred sixty-five million, one hundred fifty-one thousand, eight hundred thirteen".