18869218199 has 8 divisors (see below), whose sum is σ = 20364782592. Its totient is φ = 17379951840.

The previous prime is 18869218183. The next prime is 18869218211. The reversal of 18869218199 is 99181296881.

It is a happy number.

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 18869218199 - 2⁴ = 18869218183 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 (18869218129) 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, 1568279 + ... + 1580264.

It is an arithmetic number, because the mean of its divisors is an integer number (2545597824).

Almost surely, 2^18869218199 is an apocalyptic number.

18869218199 is a deficient number, since it is larger than the sum of its proper divisors (1495564393).

18869218199 is a wasteful number, since it uses less digits than its factorization.

18869218199 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3149017.

The product of its digits is 4478976, while the sum is 62.

The spelling of 18869218199 in words is "eighteen billion, eight hundred sixty-nine million, two hundred eighteen thousand, one hundred ninety-nine".