80198719 has 2 divisors, whose sum is σ = 80198720. Its totient is φ = 80198718.

The previous prime is 80198711. The next prime is 80198731. The reversal of 80198719 is 91789108.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 80198719 - 2³ = 80198711 is a prime.

It is a super-2 number, since 2×80198719² = 12863669058481922, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (80198711) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40099359 + 40099360.

It is an arithmetic number, because the mean of its divisors is an integer number (40099360).

Almost surely, 2^80198719 is an apocalyptic number.

80198719 is a deficient number, since it is larger than the sum of its proper divisors (1).

80198719 is an equidigital number, since it uses as much as digits as its factorization.

80198719 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 36288, while the sum is 43.

The square root of 80198719 is about 8955.3737498778. The cubic root of 80198719 is about 431.2434155965.

The spelling of 80198719 in words is "eighty million, one hundred ninety-eight thousand, seven hundred nineteen".