18913024859 has 16 divisors (see below), whose sum is σ = 20627460000. Its totient is φ = 17272442880.

The previous prime is 18913024847. The next prime is 18913024861. The reversal of 18913024859 is 95842031981.

It is a cyclic number.

It is not a de Polignac number, because 18913024859 - 2⁴ = 18913024843 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18913024159) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 326417 + ... + 379965.

It is an arithmetic number, because the mean of its divisors is an integer number (1289216250).

Almost surely, 2^18913024859 is an apocalyptic number.

18913024859 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

18913024859 is a deficient number, since it is larger than the sum of its proper divisors (1714435141).

18913024859 is a wasteful number, since it uses less digits than its factorization.

18913024859 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54238.

The product of its (nonzero) digits is 622080, while the sum is 50.

The spelling of 18913024859 in words is "eighteen billion, nine hundred thirteen million, twenty-four thousand, eight hundred fifty-nine".