18248986 has 8 divisors (see below), whose sum is σ = 31284000. Its totient is φ = 7820988.

The previous prime is 18248981. The next prime is 18249017. The reversal of 18248986 is 68984281.

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

It is not an unprimeable number, because it can be changed into a prime (18248981) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 651736 + ... + 651763.

It is an arithmetic number, because the mean of its divisors is an integer number (3910500).

Almost surely, 2^18248986 is an apocalyptic number.

18248986 is a deficient number, since it is larger than the sum of its proper divisors (13035014).

18248986 is a wasteful number, since it uses less digits than its factorization.

18248986 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1303508.

The product of its digits is 221184, while the sum is 46.

The square root of 18248986 is about 4271.8831912870. The cubic root of 18248986 is about 263.2769951937.

The spelling of 18248986 in words is "eighteen million, two hundred forty-eight thousand, nine hundred eighty-six".