18245870 has 16 divisors (see below), whose sum is σ = 33542208. Its totient is φ = 7142880.

The previous prime is 18245867. The next prime is 18245881. The reversal of 18245870 is 7854281.

It is a plaindrome in base 16.

It is a self number, because there is not a number n which added to its sum of digits gives 18245870.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 18941 + ... + 19880.

It is an arithmetic number, because the mean of its divisors is an integer number (2096388).

Almost surely, 2^18245870 is an apocalyptic number.

18245870 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

18245870 is a deficient number, since it is larger than the sum of its proper divisors (15296338).

18245870 is a wasteful number, since it uses less digits than its factorization.

18245870 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38875.

The product of its (nonzero) digits is 17920, while the sum is 35.

The square root of 18245870 is about 4271.5184653704. The cubic root of 18245870 is about 263.2620095609.

The spelling of 18245870 in words is "eighteen million, two hundred forty-five thousand, eight hundred seventy".