18025999199 has 8 divisors (see below), whose sum is σ = 19417670832. Its totient is φ = 16635049920.

The previous prime is 18025999193. The next prime is 18025999241. The reversal of 18025999199 is 99199952081.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-18025999199 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18025999193) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 128189 + ... + 229094.

It is an arithmetic number, because the mean of its divisors is an integer number (2427208854).

Almost surely, 2^18025999199 is an apocalyptic number.

18025999199 is a deficient number, since it is larger than the sum of its proper divisors (1391671633).

18025999199 is a wasteful number, since it uses less digits than its factorization.

18025999199 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 361177.

The product of its (nonzero) digits is 4723920, while the sum is 62.

The spelling of 18025999199 in words is "eighteen billion, twenty-five million, nine hundred ninety-nine thousand, one hundred ninety-nine".