18173222160 has 80 divisors (see below), whose sum is σ = 56632089600. Its totient is φ = 4820807680.

The previous prime is 18173222143. The next prime is 18173222167. The reversal of 18173222160 is 6122237181.

It is a tau number, because it is divible by the number of its divisors (80).

It is not an unprimeable number, because it can be changed into a prime (18173222167) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 152385 + ... + 244064.

It is an arithmetic number, because the mean of its divisors is an integer number (707901120).

Almost surely, 2^18173222160 is an apocalyptic number.

18173222160 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

18173222160 is an abundant number, since it is smaller than the sum of its proper divisors (38458867440).

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

18173222160 is a wasteful number, since it uses less digits than its factorization.

18173222160 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 396656 (or 396650 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 33.

The spelling of 18173222160 in words is "eighteen billion, one hundred seventy-three million, two hundred twenty-two thousand, one hundred sixty".