18550245 has 64 divisors (see below), whose sum is σ = 36126720. Its totient is φ = 7948800.

The previous prime is 18550237. The next prime is 18550261. The reversal of 18550245 is 54205581.

It is not a de Polignac number, because 18550245 - 2³ = 18550237 is a prime.

It is a super-2 number, since 2×18550245² = 688223179120050, which contains 22 as substring.

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 63 ways as a sum of consecutive naturals, for example, 133386 + ... + 133524.

It is an arithmetic number, because the mean of its divisors is an integer number (564480).

Almost surely, 2^18550245 is an apocalyptic number.

18550245 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

18550245 is a deficient number, since it is larger than the sum of its proper divisors (17576475).

18550245 is a wasteful number, since it uses less digits than its factorization.

18550245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 226.

The product of its (nonzero) digits is 8000, while the sum is 30.

The square root of 18550245 is about 4306.9995356396. Note that the first 3 decimals coincide. The cubic root of 18550245 is about 264.7178437442.

The spelling of 18550245 in words is "eighteen million, five hundred fifty thousand, two hundred forty-five".