18008801 has 2 divisors, whose sum is σ = 18008802. Its totient is φ = 18008800.

The previous prime is 18008777. The next prime is 18008819. The reversal of 18008801 is 10880081.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 16851025 + 1157776 = 4105^2 + 1076^2 .

It is a cyclic number.

It is not a de Polignac number, because 18008801 - 2²² = 13814497 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (18008821) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9004400 + 9004401.

It is an arithmetic number, because the mean of its divisors is an integer number (9004401).

Almost surely, 2^18008801 is an apocalyptic number.

It is an amenable number.

18008801 is a deficient number, since it is larger than the sum of its proper divisors (1).

18008801 is an equidigital number, since it uses as much as digits as its factorization.

18008801 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 512, while the sum is 26.

The square root of 18008801 is about 4243.6777681629. The cubic root of 18008801 is about 262.1168456928.

Adding to 18008801 its reverse (10880081), we get a palindrome (28888882).

It can be divided in two parts, 1800 and 8801, that added together give a palindrome (10601).

The spelling of 18008801 in words is "eighteen million, eight thousand, eight hundred one".