18745536 has 56 divisors (see below), whose sum is σ = 50200560. Its totient is φ = 6172672.

The previous prime is 18745477. The next prime is 18745537. The reversal of 18745536 is 63554781.

It is a super-3 number, since 3×18745536³ (a number of 23 digits) contains 333 as substring.

It is a hoax number, since the sum of its digits (39) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 18745494 and 18745503.

It is not an unprimeable number, because it can be changed into a prime (18745537) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16540 + ... + 17636.

Almost surely, 2^18745536 is an apocalyptic number.

18745536 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 18745536, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25100280).

18745536 is an abundant number, since it is smaller than the sum of its proper divisors (31455024).

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

18745536 is a wasteful number, since it uses less digits than its factorization.

18745536 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1201 (or 1191 counting only the distinct ones).

The product of its digits is 100800, while the sum is 39.

The square root of 18745536 is about 4329.6115299181. The cubic root of 18745536 is about 265.6435574763.

The spelling of 18745536 in words is "eighteen million, seven hundred forty-five thousand, five hundred thirty-six".