84018579319 has 2 divisors, whose sum is σ = 84018579320. Its totient is φ = 84018579318.

The previous prime is 84018579287. The next prime is 84018579419. The reversal of 84018579319 is 91397581048.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 84018579319 - 2⁵ = 84018579287 is a prime.

It is a super-2 number, since 2×84018579319² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 84018579319.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (84018579419) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42009289659 + 42009289660.

It is an arithmetic number, because the mean of its divisors is an integer number (42009289660).

Almost surely, 2^84018579319 is an apocalyptic number.

84018579319 is a deficient number, since it is larger than the sum of its proper divisors (1).

84018579319 is an equidigital number, since it uses as much as digits as its factorization.

84018579319 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2177280, while the sum is 55.

The spelling of 84018579319 in words is "eighty-four billion, eighteen million, five hundred seventy-nine thousand, three hundred nineteen".