18368535250 has 64 divisors (see below), whose sum is σ = 37063065312. Its totient is φ = 6776352000.

The previous prime is 18368535197. The next prime is 18368535257. The reversal of 18368535250 is 5253586381.

It is a happy number.

It can be written as a sum of positive squares in 16 ways, for example, as 5731852681 + 12636682569 = 75709^2 + 112413^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 18368535250.

It is not an unprimeable number, because it can be changed into a prime (18368535257) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6046732 + ... + 6049768.

Almost surely, 2^18368535250 is an apocalyptic number.

18368535250 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

18368535250 is an abundant number, since it is smaller than the sum of its proper divisors (18694530062).

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

18368535250 is a wasteful number, since it uses less digits than its factorization.

18368535250 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4928 (or 4918 counting only the distinct ones).

The product of its (nonzero) digits is 864000, while the sum is 46.

The spelling of 18368535250 in words is "eighteen billion, three hundred sixty-eight million, five hundred thirty-five thousand, two hundred fifty".