18098690 has 16 divisors (see below), whose sum is σ = 32762880. Its totient is φ = 7198320.

The previous prime is 18098683. The next prime is 18098719. The reversal of 18098690 is 9689081.

It is a super-2 number, since 2×18098690² = 655125159432200, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3266 + ... + 6845.

It is an arithmetic number, because the mean of its divisors is an integer number (2047680).

Almost surely, 2^18098690 is an apocalyptic number.

18098690 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

18098690 is a deficient number, since it is larger than the sum of its proper divisors (14664190).

18098690 is a wasteful number, since it uses less digits than its factorization.

18098690 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10297.

The product of its (nonzero) digits is 31104, while the sum is 41.

The square root of 18098690 is about 4254.2555165387. The cubic root of 18098690 is about 262.5522314810.

The spelling of 18098690 in words is "eighteen million, ninety-eight thousand, six hundred ninety".