18199541399 has 8 divisors (see below), whose sum is σ = 19875556512. Its totient is φ = 16562962080.

The previous prime is 18199541317. The next prime is 18199541413. The reversal of 18199541399 is 99314599181.

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-18199541399 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 (18199541099) 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, 9857984 + ... + 9859829.

It is an arithmetic number, because the mean of its divisors is an integer number (2484444564).

Almost surely, 2^18199541399 is an apocalyptic number.

18199541399 is a deficient number, since it is larger than the sum of its proper divisors (1676015113).

18199541399 is a wasteful number, since it uses less digits than its factorization.

18199541399 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19717897.

The product of its digits is 3149280, while the sum is 59.

The spelling of 18199541399 in words is "eighteen billion, one hundred ninety-nine million, five hundred forty-one thousand, three hundred ninety-nine".