18098807 has 4 divisors (see below), whose sum is σ = 18483936. Its totient is φ = 17713680.

The previous prime is 18098797. The next prime is 18098819. The reversal of 18098807 is 70889081.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 18098807 - 2²² = 13904503 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18098827) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 192494 + ... + 192587.

It is an arithmetic number, because the mean of its divisors is an integer number (4620984).

Almost surely, 2^18098807 is an apocalyptic number.

18098807 is a deficient number, since it is larger than the sum of its proper divisors (385129).

18098807 is an equidigital number, since it uses as much as digits as its factorization.

18098807 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 385128.

The product of its (nonzero) digits is 32256, while the sum is 41.

The square root of 18098807 is about 4254.2692674536. The cubic root of 18098807 is about 262.5527972410.

The spelling of 18098807 in words is "eighteen million, ninety-eight thousand, eight hundred seven".