18448965 has 20 divisors (see below), whose sum is σ = 33072204. Its totient is φ = 9839232.

The previous prime is 18448951. The next prime is 18448973. The reversal of 18448965 is 56984481.

It can be written as a sum of positive squares in 2 ways, for example, as 10614564 + 7834401 = 3258^2 + 2799^2 .

It is not a de Polignac number, because 18448965 - 2⁵ = 18448933 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 18448965.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 22372 + ... + 23181.

Almost surely, 2^18448965 is an apocalyptic number.

18448965 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

18448965 is a deficient number, since it is larger than the sum of its proper divisors (14623239).

18448965 is an equidigital number, since it uses as much as digits as its factorization.

18448965 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45570 (or 45561 counting only the distinct ones).

The product of its digits is 276480, while the sum is 45.

The square root of 18448965 is about 4295.2258380672. The cubic root of 18448965 is about 264.2351984566.

The spelling of 18448965 in words is "eighteen million, four hundred forty-eight thousand, nine hundred sixty-five".