18188034366 has 16 divisors (see below), whose sum is σ = 37549490688. Its totient is φ = 5867107800.

The previous prime is 18188034311. The next prime is 18188034391. The reversal of 18188034366 is 66343088181.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 48892380 + ... + 48892751.

It is an arithmetic number, because the mean of its divisors is an integer number (2346843168).

Almost surely, 2^18188034366 is an apocalyptic number.

18188034366 is an abundant number, since it is smaller than the sum of its proper divisors (19361456322).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

18188034366 is a wasteful number, since it uses less digits than its factorization.

18188034366 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 97785167.

The product of its (nonzero) digits is 663552, while the sum is 48.

The spelling of 18188034366 in words is "eighteen billion, one hundred eighty-eight million, thirty-four thousand, three hundred sixty-six".