18245031 has 16 divisors (see below), whose sum is σ = 28761600. Its totient is φ = 10065888.

The previous prime is 18245023. The next prime is 18245047. The reversal of 18245031 is 13054281.

It is not a de Polignac number, because 18245031 - 2³ = 18245023 is a prime.

It is a super-2 number, since 2×18245031² = 665762312381922, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 18244992 and 18245010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18245231) 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 15 ways as a sum of consecutive naturals, for example, 14371 + ... + 15588.

It is an arithmetic number, because the mean of its divisors is an integer number (1797600).

Almost surely, 2^18245031 is an apocalyptic number.

18245031 is a deficient number, since it is larger than the sum of its proper divisors (10516569).

18245031 is a wasteful number, since it uses less digits than its factorization.

18245031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29998.

The product of its (nonzero) digits is 960, while the sum is 24.

The square root of 18245031 is about 4271.4202556059. The cubic root of 18245031 is about 263.2579743059.

The spelling of 18245031 in words is "eighteen million, two hundred forty-five thousand, thirty-one".