18227197099 has 8 divisors (see below), whose sum is σ = 18376160768. Its totient is φ = 18078318720.

The previous prime is 18227197057. The next prime is 18227197147. The reversal of 18227197099 is 99079172281.

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 18227197099 - 2⁹ = 18227196587 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18227194099) 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, 450109 + ... + 488929.

It is an arithmetic number, because the mean of its divisors is an integer number (2297020096).

Almost surely, 2^18227197099 is an apocalyptic number.

18227197099 is a deficient number, since it is larger than the sum of its proper divisors (148963669).

18227197099 is a wasteful number, since it uses less digits than its factorization.

18227197099 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42645.

The product of its (nonzero) digits is 1143072, while the sum is 55.

The spelling of 18227197099 in words is "eighteen billion, two hundred twenty-seven million, one hundred ninety-seven thousand, ninety-nine".