18844097 has 4 divisors (see below), whose sum is σ = 19199700. Its totient is φ = 18488496.

The previous prime is 18844087. The next prime is 18844127. The reversal of 18844097 is 79044881.

It is a happy number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 11895601 + 6948496 = 3449^2 + 2636^2 .

It is a cyclic number.

It is not a de Polignac number, because 18844097 - 2¹⁶ = 18778561 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18844027) 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, 177722 + ... + 177827.

It is an arithmetic number, because the mean of its divisors is an integer number (4799925).

Almost surely, 2^18844097 is an apocalyptic number.

It is an amenable number.

18844097 is a deficient number, since it is larger than the sum of its proper divisors (355603).

18844097 is an equidigital number, since it uses as much as digits as its factorization.

18844097 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 355602.

The product of its (nonzero) digits is 64512, while the sum is 41.

The square root of 18844097 is about 4340.9788066748. The cubic root of 18844097 is about 266.1083141907.

The spelling of 18844097 in words is "eighteen million, eight hundred forty-four thousand, ninety-seven".