18368366850 has 72 divisors (see below), whose sum is σ = 51947054640. Its totient is φ = 4640427360.

The previous prime is 18368366833. The next prime is 18368366857. The reversal of 18368366850 is 5866386381.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (18368366857) by changing a digit.

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 35 ways as a sum of consecutive naturals, for example, 1065624 + ... + 1082723.

It is an arithmetic number, because the mean of its divisors is an integer number (721486870).

Almost surely, 2^18368366850 is an apocalyptic number.

18368366850 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

18368366850 is an abundant number, since it is smaller than the sum of its proper divisors (33578687790).

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

18368366850 is a wasteful number, since it uses less digits than its factorization.

18368366850 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2148384 (or 2148376 counting only the distinct ones).

The product of its (nonzero) digits is 4976640, while the sum is 54.

The spelling of 18368366850 in words is "eighteen billion, three hundred sixty-eight million, three hundred sixty-six thousand, eight hundred fifty".