18434091 has 8 divisors (see below), whose sum is σ = 26469520. Its totient is φ = 11344032.

The previous prime is 18434083. The next prime is 18434093. The reversal of 18434091 is 19043481.

It is a happy number.

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

It is not a de Polignac number, because 18434091 - 2³ = 18434083 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18434093) 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, 236296 + ... + 236373.

It is an arithmetic number, because the mean of its divisors is an integer number (3308690).

Almost surely, 2^18434091 is an apocalyptic number.

18434091 is a deficient number, since it is larger than the sum of its proper divisors (8035429).

18434091 is a wasteful number, since it uses less digits than its factorization.

18434091 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 472685.

The product of its (nonzero) digits is 3456, while the sum is 30.

The square root of 18434091 is about 4293.4940316716. The cubic root of 18434091 is about 264.1641684370.

The spelling of 18434091 in words is "eighteen million, four hundred thirty-four thousand, ninety-one".