82430819 has 2 divisors, whose sum is σ = 82430820. Its totient is φ = 82430818.

The previous prime is 82430813. The next prime is 82430897. The reversal of 82430819 is 91803428.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 82430819 - 2¹² = 82426723 is a prime.

It is a super-2 number, since 2×82430819² = 13589679842021522, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (82430813) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41215409 + 41215410.

It is an arithmetic number, because the mean of its divisors is an integer number (41215410).

Almost surely, 2^82430819 is an apocalyptic number.

82430819 is a deficient number, since it is larger than the sum of its proper divisors (1).

82430819 is an equidigital number, since it uses as much as digits as its factorization.

82430819 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 13824, while the sum is 35.

The square root of 82430819 is about 9079.1419748785. The cubic root of 82430819 is about 435.2076676123.

The spelling of 82430819 in words is "eighty-two million, four hundred thirty thousand, eight hundred nineteen".