18245970 has 24 divisors (see below), whose sum is σ = 47439756. Its totient is φ = 4865568.

The previous prime is 18245957. The next prime is 18245987. The reversal of 18245970 is 7954281.

It can be written as a sum of positive squares in 2 ways, for example, as 18224361 + 21609 = 4269^2 + 147^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 101277 + ... + 101456.

Almost surely, 2^18245970 is an apocalyptic number.

18245970 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

18245970 is an abundant number, since it is smaller than the sum of its proper divisors (29193786).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

18245970 is a wasteful number, since it uses less digits than its factorization.

18245970 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 202746 (or 202743 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 36.

The square root of 18245970 is about 4271.5301707936. The cubic root of 18245970 is about 263.2624905127.

The spelling of 18245970 in words is "eighteen million, two hundred forty-five thousand, nine hundred seventy".