18870924099 has 8 divisors (see below), whose sum is σ = 25162520320. Its totient is φ = 12579971976.

The previous prime is 18870924047. The next prime is 18870924151. The reversal of 18870924099 is 99042907881.

It is an interprime number because it is at equal distance from previous prime (18870924047) and next prime (18870924151).

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

It is not a de Polignac number, because 18870924099 - 2⁸ = 18870923843 is a prime.

It is a super-2 number, since 2×18870924099² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18870924029) 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 in 7 ways as a sum of consecutive naturals, for example, 87919 + ... + 213240.

It is an arithmetic number, because the mean of its divisors is an integer number (3145315040).

Almost surely, 2^18870924099 is an apocalyptic number.

18870924099 is a deficient number, since it is larger than the sum of its proper divisors (6291596221).

18870924099 is a wasteful number, since it uses less digits than its factorization.

18870924099 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 322049.

The product of its (nonzero) digits is 2612736, while the sum is 57.

The spelling of 18870924099 in words is "eighteen billion, eight hundred seventy million, nine hundred twenty-four thousand, ninety-nine".