18419344 has 10 divisors (see below), whose sum is σ = 35687510. Its totient is φ = 9209664.

The previous prime is 18419329. The next prime is 18419369. The reversal of 18419344 is 44391481.

It can be written as a sum of positive squares in only one way, i.e., 18386944 + 32400 = 4288^2 + 180^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 575589 + ... + 575620.

It is an arithmetic number, because the mean of its divisors is an integer number (3568751).

Almost surely, 2^18419344 is an apocalyptic number.

It is an amenable number.

18419344 is a deficient number, since it is larger than the sum of its proper divisors (17268166).

18419344 is a wasteful number, since it uses less digits than its factorization.

18419344 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1151217 (or 1151211 counting only the distinct ones).

The product of its digits is 13824, while the sum is 34.

The square root of 18419344 is about 4291.7763222237. The cubic root of 18419344 is about 264.0937071692.

The spelling of 18419344 in words is "eighteen million, four hundred nineteen thousand, three hundred forty-four".