18449245 has 8 divisors (see below), whose sum is σ = 22171320. Its totient is φ = 14737920.

The previous prime is 18449237. The next prime is 18449251. The reversal of 18449245 is 54294481.

It can be written as a sum of positive squares in 4 ways, for example, as 3541924 + 14907321 = 1882^2 + 3861^2 .

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

It is not a de Polignac number, because 18449245 - 2³ = 18449237 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1765 + ... + 6325.

It is an arithmetic number, because the mean of its divisors is an integer number (2771415).

Almost surely, 2^18449245 is an apocalyptic number.

It is an amenable number.

18449245 is a deficient number, since it is larger than the sum of its proper divisors (3722075).

18449245 is an equidigital number, since it uses as much as digits as its factorization.

18449245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5375.

The product of its digits is 46080, while the sum is 37.

The square root of 18449245 is about 4295.2584322716. The cubic root of 18449245 is about 264.2365352159.

The spelling of 18449245 in words is "eighteen million, four hundred forty-nine thousand, two hundred forty-five".