18418801 has 4 divisors (see below), whose sum is σ = 18427392. Its totient is φ = 18410212.

The previous prime is 18418793. The next prime is 18418819. The reversal of 18418801 is 10881481.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 18418801 - 2³ = 18418793 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18418831) 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, 1896 + ... + 6358.

It is an arithmetic number, because the mean of its divisors is an integer number (4606848).

Almost surely, 2^18418801 is an apocalyptic number.

It is an amenable number.

18418801 is a deficient number, since it is larger than the sum of its proper divisors (8591).

18418801 is an equidigital number, since it uses as much as digits as its factorization.

18418801 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8590.

The product of its (nonzero) digits is 2048, while the sum is 31.

The square root of 18418801 is about 4291.7130612379. The cubic root of 18418801 is about 264.0911119937.

The spelling of 18418801 in words is "eighteen million, four hundred eighteen thousand, eight hundred one".