18665490795 has 32 divisors (see below), whose sum is σ = 34136675328. Its totient is φ = 8531422848.

The previous prime is 18665490791. The next prime is 18665490797. The reversal of 18665490795 is 59709456681.

It is not a de Polignac number, because 18665490795 - 2² = 18665490791 is a prime.

It is not an unprimeable number, because it can be changed into a prime (18665490791) 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, 948597 + ... + 968073.

It is an arithmetic number, because the mean of its divisors is an integer number (1066771104).

Almost surely, 2^18665490795 is an apocalyptic number.

18665490795 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

18665490795 is a deficient number, since it is larger than the sum of its proper divisors (15471184533).

18665490795 is a wasteful number, since it uses less digits than its factorization.

18665490795 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28619.

The product of its (nonzero) digits is 16329600, while the sum is 60.

The spelling of 18665490795 in words is "eighteen billion, six hundred sixty-five million, four hundred ninety thousand, seven hundred ninety-five".