1392957779231 has 2 divisors, whose sum is σ = 1392957779232. Its totient is φ = 1392957779230.

The previous prime is 1392957779219. The next prime is 1392957779233. The reversal of 1392957779231 is 1329777592931.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1392957779231 - 2³⁰ = 1391884037407 is a prime.

It is a super-2 number, since 2×1392957779231² (a number of 25 digits) contains 22 as substring.

Together with 1392957779233, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1392957779233) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 696478889615 + 696478889616.

It is an arithmetic number, because the mean of its divisors is an integer number (696478889616).

Almost surely, 2^{1392957779231} is an apocalyptic number.

1392957779231 is a deficient number, since it is larger than the sum of its proper divisors (1).

1392957779231 is an equidigital number, since it uses as much as digits as its factorization.

1392957779231 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 45008460, while the sum is 65.

The spelling of 1392957779231 in words is "one trillion, three hundred ninety-two billion, nine hundred fifty-seven million, seven hundred seventy-nine thousand, two hundred thirty-one".