18223402244 has 12 divisors (see below), whose sum is σ = 31893598044. Its totient is φ = 9110945664.

The previous prime is 18223402217. The next prime is 18223402273. The reversal of 18223402244 is 44220432281.

It can be written as a sum of positive squares in 2 ways, for example, as 16361479744 + 1861922500 = 127912^2 + 43150^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 18223402244.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 132737 + ... + 232520.

It is an arithmetic number, because the mean of its divisors is an integer number (2657799837).

Almost surely, 2^18223402244 is an apocalyptic number.

It is an amenable number.

18223402244 is a deficient number, since it is larger than the sum of its proper divisors (13670195800).

18223402244 is a wasteful number, since it uses less digits than its factorization.

18223402244 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 377734 (or 377732 counting only the distinct ones).

The product of its (nonzero) digits is 24576, while the sum is 32.

The spelling of 18223402244 in words is "eighteen billion, two hundred twenty-three million, four hundred two thousand, two hundred forty-four".