18448964 has 6 divisors (see below), whose sum is σ = 32285694. Its totient is φ = 9224480.

The previous prime is 18448951. The next prime is 18448973. The reversal of 18448964 is 46984481.

It can be written as a sum of positive squares in only one way, i.e., 14122564 + 4326400 = 3758^2 + 2080^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2306117 + ... + 2306124.

It is an arithmetic number, because the mean of its divisors is an integer number (5380949).

Almost surely, 2^18448964 is an apocalyptic number.

It is an amenable number.

18448964 is a deficient number, since it is larger than the sum of its proper divisors (13836730).

18448964 is a wasteful number, since it uses less digits than its factorization.

18448964 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4612245 (or 4612243 counting only the distinct ones).

The product of its digits is 221184, while the sum is 44.

The square root of 18448964 is about 4295.2257216589. The cubic root of 18448964 is about 264.2351936824.

The spelling of 18448964 in words is "eighteen million, four hundred forty-eight thousand, nine hundred sixty-four".