18944236 has 12 divisors (see below), whose sum is σ = 33190528. Its totient is φ = 9461232.

The previous prime is 18944231. The next prime is 18944257. The reversal of 18944236 is 63244981.

It is a hoax number, since the sum of its digits (37) 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 = 18944195 and 18944204.

It is not an unprimeable number, because it can be changed into a prime (18944231) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2170 + ... + 6526.

Almost surely, 2^18944236 is an apocalyptic number.

It is an amenable number.

18944236 is a deficient number, since it is larger than the sum of its proper divisors (14246292).

18944236 is a wasteful number, since it uses less digits than its factorization.

18944236 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5448 (or 5446 counting only the distinct ones).

The product of its digits is 41472, while the sum is 37.

The square root of 18944236 is about 4352.4976737501. The cubic root of 18944236 is about 266.5788551152.

The spelling of 18944236 in words is "eighteen million, nine hundred forty-four thousand, two hundred thirty-six".