18449995 has 8 divisors (see below), whose sum is σ = 22188384. Its totient is φ = 14727744.

The previous prime is 18449983. The next prime is 18450001. The reversal of 18449995 is 59994481.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-18449995 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1354 + ... + 6223.

It is an arithmetic number, because the mean of its divisors is an integer number (2773548).

Almost surely, 2^18449995 is an apocalyptic number.

18449995 is a deficient number, since it is larger than the sum of its proper divisors (3738389).

18449995 is an equidigital number, since it uses as much as digits as its factorization.

18449995 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8069.

The product of its digits is 466560, while the sum is 49.

The square root of 18449995 is about 4295.3457369576. The cubic root of 18449995 is about 264.2401157548.

The spelling of 18449995 in words is "eighteen million, four hundred forty-nine thousand, nine hundred ninety-five".