82510919 has 2 divisors, whose sum is σ = 82510920. Its totient is φ = 82510918.

The previous prime is 82510891. The next prime is 82510927. The reversal of 82510919 is 91901528.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-82510919 is a prime.

It is a super-2 number, since 2×82510919² = 13616103508449122, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (82510019) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41255459 + 41255460.

It is an arithmetic number, because the mean of its divisors is an integer number (41255460).

Almost surely, 2^82510919 is an apocalyptic number.

82510919 is a deficient number, since it is larger than the sum of its proper divisors (1).

82510919 is an equidigital number, since it uses as much as digits as its factorization.

82510919 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6480, while the sum is 35.

The square root of 82510919 is about 9083.5521135732. The cubic root of 82510919 is about 435.3485892127.

The spelling of 82510919 in words is "eighty-two million, five hundred ten thousand, nine hundred nineteen".