18448868 has 6 divisors (see below), whose sum is σ = 32285526. Its totient is φ = 9224432.

The previous prime is 18448841. The next prime is 18448873. The reversal of 18448868 is 86884481.

It can be written as a sum of positive squares in only one way, i.e., 16711744 + 1737124 = 4088^2 + 1318^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2306105 + ... + 2306112.

It is an arithmetic number, because the mean of its divisors is an integer number (5380921).

Almost surely, 2^18448868 is an apocalyptic number.

It is an amenable number.

18448868 is a deficient number, since it is larger than the sum of its proper divisors (13836658).

18448868 is a wasteful number, since it uses less digits than its factorization.

18448868 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4612221 (or 4612219 counting only the distinct ones).

The product of its digits is 393216, while the sum is 47.

The square root of 18448868 is about 4295.2145464458. The cubic root of 18448868 is about 264.2347353618.

The spelling of 18448868 in words is "eighteen million, four hundred forty-eight thousand, eight hundred sixty-eight".