18180244334 has 32 divisors (see below), whose sum is σ = 32035331520. Its totient is φ = 7576837632.

The previous prime is 18180244307. The next prime is 18180244343. The reversal of 18180244334 is 43344208181.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 24569 + ... + 192260.

It is an arithmetic number, because the mean of its divisors is an integer number (1001104110).

Almost surely, 2^18180244334 is an apocalyptic number.

18180244334 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

18180244334 is a deficient number, since it is larger than the sum of its proper divisors (13855087186).

18180244334 is a wasteful number, since it uses less digits than its factorization.

18180244334 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 217004.

The product of its (nonzero) digits is 73728, while the sum is 38.

The spelling of 18180244334 in words is "eighteen billion, one hundred eighty million, two hundred forty-four thousand, three hundred thirty-four".