18199849948319 has 8 divisors (see below), whose sum is σ = 19626798303840. Its totient is φ = 16776753006816.

The previous prime is 18199849948207. The next prime is 18199849948321. The reversal of 18199849948319 is 91384994899181.

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

It is a cyclic number.

It is not a de Polignac number, because 18199849948319 - 2²⁴ = 18199833171103 is a prime.

It is a super-2 number, since 2×18199849948319² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18199849948349) 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, 962843684 + ... + 962862585.

It is an arithmetic number, because the mean of its divisors is an integer number (2453349787980).

Almost surely, 2^{18199849948319} is an apocalyptic number.

18199849948319 is a deficient number, since it is larger than the sum of its proper divisors (1426948355521).

18199849948319 is a wasteful number, since it uses less digits than its factorization.

18199849948319 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1925707009.

The product of its digits is 1451188224, while the sum is 83.

The spelling of 18199849948319 in words is "eighteen trillion, one hundred ninety-nine billion, eight hundred forty-nine million, nine hundred forty-eight thousand, three hundred nineteen".