18231245 has 8 divisors (see below), whose sum is σ = 21917184. Its totient is φ = 14558544.

The previous prime is 18231229. The next prime is 18231271. The reversal of 18231245 is 54213281.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 18231245 - 2⁴ = 18231229 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 32 + ... + 6038.

It is an arithmetic number, because the mean of its divisors is an integer number (2739648).

Almost surely, 2^18231245 is an apocalyptic number.

It is an amenable number.

18231245 is a deficient number, since it is larger than the sum of its proper divisors (3685939).

18231245 is an equidigital number, since it uses as much as digits as its factorization.

18231245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6619.

The product of its digits is 1920, while the sum is 26.

The square root of 18231245 is about 4269.8062016911. The cubic root of 18231245 is about 263.1916514276.

The spelling of 18231245 in words is "eighteen million, two hundred thirty-one thousand, two hundred forty-five".