18017924899 has 8 divisors (see below), whose sum is σ = 19495883792. Its totient is φ = 16553103840.

The previous prime is 18017924893. The next prime is 18017924909. The reversal of 18017924899 is 99842971081.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2^k-18017924899 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18017924893) by changing a digit.

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 in 7 ways as a sum of consecutive naturals, for example, 3281604 + ... + 3287089.

It is an arithmetic number, because the mean of its divisors is an integer number (2436985474).

Almost surely, 2^18017924899 is an apocalyptic number.

18017924899 is a deficient number, since it is larger than the sum of its proper divisors (1477958893).

18017924899 is a wasteful number, since it uses less digits than its factorization.

18017924899 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6568917.

The product of its (nonzero) digits is 2612736, while the sum is 58.

The spelling of 18017924899 in words is "eighteen billion, seventeen million, nine hundred twenty-four thousand, eight hundred ninety-nine".