18949344 has 24 divisors (see below), whose sum is σ = 49742280. Its totient is φ = 6316416.

The previous prime is 18949331. The next prime is 18949349. The reversal of 18949344 is 44394981.

It is a tau number, because it is divible by the number of its divisors (24).

It is a hoax number, since the sum of its digits (42) 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 = 18949296 and 18949305.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18949349) 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, 98599 + ... + 98790.

It is an arithmetic number, because the mean of its divisors is an integer number (2072595).

Almost surely, 2^18949344 is an apocalyptic number.

It is an amenable number.

18949344 is an abundant number, since it is smaller than the sum of its proper divisors (30792936).

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

18949344 is a wasteful number, since it uses less digits than its factorization.

18949344 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 197402 (or 197394 counting only the distinct ones).

The product of its digits is 124416, while the sum is 42.

The square root of 18949344 is about 4353.0844237161. The cubic root of 18949344 is about 266.6028124889.

The spelling of 18949344 in words is "eighteen million, nine hundred forty-nine thousand, three hundred forty-four".