18044801 has 4 divisors (see below), whose sum is σ = 18213552. Its totient is φ = 17876052.

The previous prime is 18044783. The next prime is 18044809. The reversal of 18044801 is 10844081.

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 an emirpimes, since its reverse is a distinct semiprime: 10844081 = 479 ⋅22639.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-18044801 is a prime.

It is a super-2 number, since 2×18044801² = 651229686259202, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18044809) 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 in 3 ways as a sum of consecutive naturals, for example, 84215 + ... + 84428.

It is an arithmetic number, because the mean of its divisors is an integer number (4553388).

Almost surely, 2^18044801 is an apocalyptic number.

It is an amenable number.

18044801 is a deficient number, since it is larger than the sum of its proper divisors (168751).

18044801 is a wasteful number, since it uses less digits than its factorization.

18044801 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 168750.

The product of its (nonzero) digits is 1024, while the sum is 26.

The square root of 18044801 is about 4247.9172543730. The cubic root of 18044801 is about 262.2913886045.

Adding to 18044801 its reverse (10844081), we get a palindrome (28888882).

The spelling of 18044801 in words is "eighteen million, forty-four thousand, eight hundred one".