18502036 has 12 divisors (see below), whose sum is σ = 37004128. Its totient is φ = 7929432.

The previous prime is 18502031. The next prime is 18502039. The reversal of 18502036 is 63020581.

It is a happy number.

18502036 is an admirable number.

It is a super-2 number, since 2×18502036² = 684650672290592, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 18502036.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18502031) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 330366 + ... + 330421.

Almost surely, 2^18502036 is an apocalyptic number.

It is an amenable number.

18502036 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

18502036 is a wasteful number, since it uses less digits than its factorization.

18502036 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 660798 (or 660796 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 25.

The square root of 18502036 is about 4301.3993072023. The cubic root of 18502036 is about 264.4883255937.

The spelling of 18502036 in words is "eighteen million, five hundred two thousand, thirty-six".