18496944 has 80 divisors (see below), whose sum is σ = 54282240. Its totient is φ = 6027840.

The previous prime is 18496939. The next prime is 18496949. The reversal of 18496944 is 44969481.

It is an interprime number because it is at equal distance from previous prime (18496939) and next prime (18496949).

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 18496944.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18496949) 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, 19849 + ... + 20759.

It is an arithmetic number, because the mean of its divisors is an integer number (678528).

Almost surely, 2^18496944 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 18496944, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27141120).

18496944 is an abundant number, since it is smaller than the sum of its proper divisors (35785296).

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

18496944 is a wasteful number, since it uses less digits than its factorization.

18496944 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 975 (or 963 counting only the distinct ones).

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

The square root of 18496944 is about 4300.8073660651. The cubic root of 18496944 is about 264.4640598296.

The spelling of 18496944 in words is "eighteen million, four hundred ninety-six thousand, nine hundred forty-four".