768131869 has 2 divisors, whose sum is σ = 768131870. Its totient is φ = 768131868.

The previous prime is 768131839. The next prime is 768131891. The reversal of 768131869 is 968131867.

768131869 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., 503418969 + 264712900 = 22437^2 + 16270^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-768131869 is a prime.

It is a super-2 number, since 2×768131869² = 1180053136346866322, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (768131839) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 384065934 + 384065935.

It is an arithmetic number, because the mean of its divisors is an integer number (384065935).

Almost surely, 2^768131869 is an apocalyptic number.

It is an amenable number.

768131869 is a deficient number, since it is larger than the sum of its proper divisors (1).

768131869 is an equidigital number, since it uses as much as digits as its factorization.

768131869 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 435456, while the sum is 49.

The square root of 768131869 is about 27715.1920253135. The cubic root of 768131869 is about 915.8238050439.

The spelling of 768131869 in words is "seven hundred sixty-eight million, one hundred thirty-one thousand, eight hundred sixty-nine".