18850338 has 24 divisors (see below), whose sum is σ = 43984668. Its totient is φ = 5800032.

The previous prime is 18850333. The next prime is 18850343. The reversal of 18850338 is 83305881.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (18850333) and next prime (18850343).

It can be written as a sum of positive squares in 2 ways, for example, as 18378369 + 471969 = 4287^2 + 687^2 .

It is not an unprimeable number, because it can be changed into a prime (18850333) by changing a digit.

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, 40045 + ... + 40512.

Almost surely, 2^18850338 is an apocalyptic number.

18850338 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

18850338 is an abundant number, since it is smaller than the sum of its proper divisors (25134330).

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

18850338 is a wasteful number, since it uses less digits than its factorization.

18850338 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80578 (or 80575 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 36.

The square root of 18850338 is about 4341.6975942596. The cubic root of 18850338 is about 266.1376885296.

The spelling of 18850338 in words is "eighteen million, eight hundred fifty thousand, three hundred thirty-eight".