18169380244 has 48 divisors (see below), whose sum is σ = 32646136320. Its totient is φ = 8845649120.

The previous prime is 18169380197. The next prime is 18169380253. The reversal of 18169380244 is 44208396181.

It is a hoax number, since the sum of its digits (46) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 18169380194 and 18169380203.

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, 12731859 + ... + 12733285.

It is an arithmetic number, because the mean of its divisors is an integer number (680127840).

Almost surely, 2^18169380244 is an apocalyptic number.

It is an amenable number.

18169380244 is a deficient number, since it is larger than the sum of its proper divisors (14476756076).

18169380244 is a wasteful number, since it uses less digits than its factorization.

18169380244 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2028 (or 2026 counting only the distinct ones).

The product of its (nonzero) digits is 331776, while the sum is 46.

The spelling of 18169380244 in words is "eighteen billion, one hundred sixty-nine million, three hundred eighty thousand, two hundred forty-four".