18240883 has 4 divisors (see below), whose sum is σ = 18384640. Its totient is φ = 18097128.

The previous prime is 18240877. The next prime is 18240899. The reversal of 18240883 is 38804281.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-18240883 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18640883) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 71688 + ... + 71941.

It is an arithmetic number, because the mean of its divisors is an integer number (4596160).

Almost surely, 2^18240883 is an apocalyptic number.

18240883 is a deficient number, since it is larger than the sum of its proper divisors (143757).

18240883 is a wasteful number, since it uses less digits than its factorization.

18240883 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 143756.

The product of its (nonzero) digits is 12288, while the sum is 34.

The square root of 18240883 is about 4270.9346752204. The cubic root of 18240883 is about 263.2380222645.

The spelling of 18240883 in words is "eighteen million, two hundred forty thousand, eight hundred eighty-three".