18209468 has 24 divisors (see below), whose sum is σ = 34032768. Its totient is φ = 8504496.

The previous prime is 18209459. The next prime is 18209483. The reversal of 18209468 is 86490281.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1655 + ... + 6257.

It is an arithmetic number, because the mean of its divisors is an integer number (1418032).

Almost surely, 2^18209468 is an apocalyptic number.

It is an amenable number.

18209468 is a deficient number, since it is larger than the sum of its proper divisors (15823300).

18209468 is a wasteful number, since it uses less digits than its factorization.

18209468 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4673 (or 4671 counting only the distinct ones).

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

The square root of 18209468 is about 4267.2553239758. The cubic root of 18209468 is about 263.0868166016.

The spelling of 18209468 in words is "eighteen million, two hundred nine thousand, four hundred sixty-eight".