80365619 has 2 divisors, whose sum is σ = 80365620. Its totient is φ = 80365618.

The previous prime is 80365603. The next prime is 80365639. The reversal of 80365619 is 91656308.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 80365619 - 2⁴ = 80365603 is a prime.

It is a super-2 number, since 2×80365619² = 12917265434506322, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is equal to p_4689470 and since 80365619 and 4689470 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (80365639) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40182809 + 40182810.

It is an arithmetic number, because the mean of its divisors is an integer number (40182810).

Almost surely, 2^80365619 is an apocalyptic number.

80365619 is a deficient number, since it is larger than the sum of its proper divisors (1).

80365619 is an equidigital number, since it uses as much as digits as its factorization.

80365619 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 38880, while the sum is 38.

The square root of 80365619 is about 8964.6873342019. The cubic root of 80365619 is about 431.5423590889.

The spelling of 80365619 in words is "eighty million, three hundred sixty-five thousand, six hundred nineteen".