18608586398 has 4 divisors (see below), whose sum is σ = 27912879600. Its totient is φ = 9304293198.

The previous prime is 18608586383. The next prime is 18608586421. The reversal of 18608586398 is 89368580681.

18608586398 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a super-2 number, since 2×18608586398² (a number of 21 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 18608586398.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4652146598 + ... + 4652146601.

It is an arithmetic number, because the mean of its divisors is an integer number (6978219900).

Almost surely, 2^18608586398 is an apocalyptic number.

18608586398 is a deficient number, since it is larger than the sum of its proper divisors (9304293202).

18608586398 is an equidigital number, since it uses as much as digits as its factorization.

18608586398 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9304293201.

The product of its (nonzero) digits is 19906560, while the sum is 62.

The spelling of 18608586398 in words is "eighteen billion, six hundred eight million, five hundred eighty-six thousand, three hundred ninety-eight".