18268490 has 8 divisors (see below), whose sum is σ = 32883300. Its totient is φ = 7307392.

The previous prime is 18268487. The next prime is 18268531. The reversal of 18268490 is 9486281.

It can be written as a sum of positive squares in 2 ways, for example, as 17581249 + 687241 = 4193^2 + 829^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 913415 + ... + 913434.

Almost surely, 2^18268490 is an apocalyptic number.

18268490 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

18268490 is a deficient number, since it is larger than the sum of its proper divisors (14614810).

18268490 is a wasteful number, since it uses less digits than its factorization.

18268490 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1826856.

The product of its (nonzero) digits is 27648, while the sum is 38.

The square root of 18268490 is about 4274.1654156104. The cubic root of 18268490 is about 263.3707561336.

The spelling of 18268490 in words is "eighteen million, two hundred sixty-eight thousand, four hundred ninety".