18964944 has 30 divisors (see below), whose sum is σ = 53075906. Its totient is φ = 6321600.

The previous prime is 18964931. The next prime is 18964951. The reversal of 18964944 is 44946981.

It can be written as a sum of positive squares in only one way, i.e., 15681600 + 3283344 = 3960^2 + 1812^2 .

It is a nude number because it is divisible by every one of its digits.

It is a self number, because there is not a number n which added to its sum of digits gives 18964944.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 65707 + ... + 65994.

Almost surely, 2^18964944 is an apocalyptic number.

It is an amenable number.

18964944 is an abundant number, since it is smaller than the sum of its proper divisors (34110962).

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

18964944 is a wasteful number, since it uses less digits than its factorization.

18964944 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 131715 (or 131706 counting only the distinct ones).

The product of its digits is 248832, while the sum is 45.

The square root of 18964944 is about 4354.8758880133. The cubic root of 18964944 is about 266.6759524544.

The spelling of 18964944 in words is "eighteen million, nine hundred sixty-four thousand, nine hundred forty-four".