18228568395 has 32 divisors (see below), whose sum is σ = 29686406400. Its totient is φ = 9549175680.

The previous prime is 18228568381. The next prime is 18228568399. The reversal of 18228568395 is 59386582281.

It is not a de Polignac number, because 18228568395 - 2⁵ = 18228568363 is a prime.

It is not an unprimeable number, because it can be changed into a prime (18228568399) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 324760 + ... + 376730.

It is an arithmetic number, because the mean of its divisors is an integer number (927700200).

Almost surely, 2^18228568395 is an apocalyptic number.

18228568395 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

18228568395 is a deficient number, since it is larger than the sum of its proper divisors (11457838005).

18228568395 is a wasteful number, since it uses less digits than its factorization.

18228568395 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52395.

The product of its digits is 8294400, while the sum is 57.

The spelling of 18228568395 in words is "eighteen billion, two hundred twenty-eight million, five hundred sixty-eight thousand, three hundred ninety-five".