18108797 has 16 divisors (see below), whose sum is σ = 21779712. Its totient is φ = 14720640.

The previous prime is 18108793. The next prime is 18108823. The reversal of 18108797 is 79780181.

It is a cyclic number.

It is not a de Polignac number, because 18108797 - 2² = 18108793 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18108793) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 21647 + ... + 22467.

It is an arithmetic number, because the mean of its divisors is an integer number (1361232).

Almost surely, 2^18108797 is an apocalyptic number.

It is an amenable number.

18108797 is a deficient number, since it is larger than the sum of its proper divisors (3670915).

18108797 is a wasteful number, since it uses less digits than its factorization.

18108797 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 988.

The product of its (nonzero) digits is 28224, while the sum is 41.

The square root of 18108797 is about 4255.4432201593. The cubic root of 18108797 is about 262.6010954521.

The spelling of 18108797 in words is "eighteen million, one hundred eight thousand, seven hundred ninety-seven".