18226090 has 16 divisors (see below), whose sum is σ = 33223680. Its totient is φ = 7197840.

The previous prime is 18226079. The next prime is 18226093. The reversal of 18226090 is 9062281.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (18226093) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10746 + ... + 12325.

It is an arithmetic number, because the mean of its divisors is an integer number (2076480).

Almost surely, 2^18226090 is an apocalyptic number.

18226090 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

18226090 is a deficient number, since it is larger than the sum of its proper divisors (14997590).

18226090 is a wasteful number, since it uses less digits than its factorization.

18226090 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23157.

The product of its (nonzero) digits is 1728, while the sum is 28.

The square root of 18226090 is about 4269.2025016389. The cubic root of 18226090 is about 263.1668427203.

The spelling of 18226090 in words is "eighteen million, two hundred twenty-six thousand, ninety".