18850536 has 64 divisors (see below), whose sum is σ = 52747200. Its totient is φ = 6237504.

The previous prime is 18850523. The next prime is 18850541. The reversal of 18850536 is 63505881.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 18850536.

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 15 ways as a sum of consecutive naturals, for example, 42331 + ... + 42773.

It is an arithmetic number, because the mean of its divisors is an integer number (824175).

Almost surely, 2^18850536 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 18850536, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26373600).

18850536 is an abundant number, since it is smaller than the sum of its proper divisors (33896664).

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

18850536 is a wasteful number, since it uses less digits than its factorization.

18850536 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 655 (or 645 counting only the distinct ones).

The product of its (nonzero) digits is 28800, while the sum is 36.

The square root of 18850536 is about 4341.7203963406. The cubic root of 18850536 is about 266.1386203445.

The spelling of 18850536 in words is "eighteen million, eight hundred fifty thousand, five hundred thirty-six".