82738391 has 2 divisors, whose sum is σ = 82738392. Its totient is φ = 82738390.

The previous prime is 82738351. The next prime is 82738417. The reversal of 82738391 is 19383728.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 82738391 - 2²² = 78544087 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (82738351) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41369195 + 41369196.

It is an arithmetic number, because the mean of its divisors is an integer number (41369196).

Almost surely, 2^82738391 is an apocalyptic number.

82738391 is a deficient number, since it is larger than the sum of its proper divisors (1).

82738391 is an equidigital number, since it uses as much as digits as its factorization.

82738391 is an evil number, because the sum of its binary digits is even.

The product of its digits is 72576, while the sum is 41.

The square root of 82738391 is about 9096.0645886009. The cubic root of 82738391 is about 435.7482888348.

The spelling of 82738391 in words is "eighty-two million, seven hundred thirty-eight thousand, three hundred ninety-one".