18625536 has 132 divisors (see below), whose sum is σ = 56202432. Its totient is φ = 5935104.

The previous prime is 18625517. The next prime is 18625549. The reversal of 18625536 is 63552681.

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 18625536.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 396265 + ... + 396311.

It is an arithmetic number, because the mean of its divisors is an integer number (425776).

Almost surely, 2^18625536 is an apocalyptic number.

18625536 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 18625536, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28101216).

18625536 is an abundant number, since it is smaller than the sum of its proper divisors (37576896).

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

18625536 is a wasteful number, since it uses less digits than its factorization.

18625536 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 116 (or 95 counting only the distinct ones).

The product of its digits is 43200, while the sum is 36.

The square root of 18625536 is about 4315.7312242539. The cubic root of 18625536 is about 265.0755023975.

The spelling of 18625536 in words is "eighteen million, six hundred twenty-five thousand, five hundred thirty-six".