82931464391 has 2 divisors, whose sum is σ = 82931464392. Its totient is φ = 82931464390.

The previous prime is 82931464351. The next prime is 82931464397. The reversal of 82931464391 is 19346413928.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 82931464391 - 2¹⁰ = 82931463367 is a prime.

It is a super-3 number, since 3×82931464391³ (a number of 34 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (82931464397) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41465732195 + 41465732196.

It is an arithmetic number, because the mean of its divisors is an integer number (41465732196).

Almost surely, 2^82931464391 is an apocalyptic number.

82931464391 is a deficient number, since it is larger than the sum of its proper divisors (1).

82931464391 is an equidigital number, since it uses as much as digits as its factorization.

82931464391 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1119744, while the sum is 50.

The spelling of 82931464391 in words is "eighty-two billion, nine hundred thirty-one million, four hundred sixty-four thousand, three hundred ninety-one".