18819344 has 20 divisors (see below), whose sum is σ = 36671760. Its totient is φ = 9355680.

The previous prime is 18819341. The next prime is 18819371. The reversal of 18819344 is 44391881.

It is a hoax number, since the sum of its digits (38) 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 = 18819298 and 18819307.

It is not an unprimeable number, because it can be changed into a prime (18819341) 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, 422 + ... + 6149.

It is an arithmetic number, because the mean of its divisors is an integer number (1833588).

Almost surely, 2^18819344 is an apocalyptic number.

It is an amenable number.

18819344 is a deficient number, since it is larger than the sum of its proper divisors (17852416).

18819344 is a wasteful number, since it uses less digits than its factorization.

18819344 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6758 (or 6752 counting only the distinct ones).

The product of its digits is 27648, while the sum is 38.

The square root of 18819344 is about 4338.1267846848. The cubic root of 18819344 is about 265.9917460269.

The spelling of 18819344 in words is "eighteen million, eight hundred nineteen thousand, three hundred forty-four".