18126091 has 8 divisors (see below), whose sum is σ = 18653184. Its totient is φ = 17603880.

The previous prime is 18126079. The next prime is 18126127. The reversal of 18126091 is 19062181.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 18126091 - 2⁷ = 18125963 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18126061) 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, 7110 + ... + 9316.

It is an arithmetic number, because the mean of its divisors is an integer number (2331648).

Almost surely, 2^18126091 is an apocalyptic number.

18126091 is a deficient number, since it is larger than the sum of its proper divisors (527093).

18126091 is a wasteful number, since it uses less digits than its factorization.

18126091 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2441.

The product of its (nonzero) digits is 864, while the sum is 28.

The square root of 18126091 is about 4257.4747210054. The cubic root of 18126091 is about 262.6846640149.

The spelling of 18126091 in words is "eighteen million, one hundred twenty-six thousand, ninety-one".