18944246 has 4 divisors (see below), whose sum is σ = 28416372. Its totient is φ = 9472122.

The previous prime is 18944231. The next prime is 18944257. The reversal of 18944246 is 64244981.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 64244981 = 743 ⋅86467.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4736060 + ... + 4736063.

It is an arithmetic number, because the mean of its divisors is an integer number (7104093).

Almost surely, 2^18944246 is an apocalyptic number.

18944246 is a deficient number, since it is larger than the sum of its proper divisors (9472126).

18944246 is an equidigital number, since it uses as much as digits as its factorization.

18944246 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9472125.

The product of its digits is 55296, while the sum is 38.

The square root of 18944246 is about 4352.4988225156. The cubic root of 18944246 is about 266.5789020211.

The spelling of 18944246 in words is "eighteen million, nine hundred forty-four thousand, two hundred forty-six".