18368859854 has 4 divisors (see below), whose sum is σ = 27553289784. Its totient is φ = 9184429926.

The previous prime is 18368859823. The next prime is 18368859889. The reversal of 18368859854 is 45895886381.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4592214962 + ... + 4592214965.

It is an arithmetic number, because the mean of its divisors is an integer number (6888322446).

Almost surely, 2^18368859854 is an apocalyptic number.

18368859854 is a deficient number, since it is larger than the sum of its proper divisors (9184429930).

18368859854 is an equidigital number, since it uses as much as digits as its factorization.

18368859854 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9184429929.

The product of its digits is 66355200, while the sum is 65.

The spelling of 18368859854 in words is "eighteen billion, three hundred sixty-eight million, eight hundred fifty-nine thousand, eight hundred fifty-four".