18619204579 has 2 divisors, whose sum is σ = 18619204580. Its totient is φ = 18619204578.

The previous prime is 18619204577. The next prime is 18619204633. The reversal of 18619204579 is 97540291681.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 18619204579 - 2¹ = 18619204577 is a prime.

Together with 18619204577, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (18619204577) 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, 9309602289 + 9309602290.

It is an arithmetic number, because the mean of its divisors is an integer number (9309602290).

Almost surely, 2^18619204579 is an apocalyptic number.

18619204579 is a deficient number, since it is larger than the sum of its proper divisors (1).

18619204579 is an equidigital number, since it uses as much as digits as its factorization.

18619204579 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1088640, while the sum is 52.

The spelling of 18619204579 in words is "eighteen billion, six hundred nineteen million, two hundred four thousand, five hundred seventy-nine".