18500366852 has 12 divisors (see below), whose sum is σ = 35318882256. Its totient is φ = 8409257640.

The previous prime is 18500366821. The next prime is 18500366867. The reversal of 18500366852 is 25866300581.

It is a Harshad number since it is a multiple of its sum of digits (44), and also a Moran number because the ratio is a prime number: 420462883 = 18500366852 / (1 + 8 + 5 + 0 + 0 + 3 + 6 + 6 + 8 + 5 + 2).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 210231398 + ... + 210231485.

It is an arithmetic number, because the mean of its divisors is an integer number (2943240188).

Almost surely, 2^18500366852 is an apocalyptic number.

It is an amenable number.

18500366852 is a deficient number, since it is larger than the sum of its proper divisors (16818515404).

18500366852 is a wasteful number, since it uses less digits than its factorization.

18500366852 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 420462898 (or 420462896 counting only the distinct ones).

The product of its (nonzero) digits is 345600, while the sum is 44.

The spelling of 18500366852 in words is "eighteen billion, five hundred million, three hundred sixty-six thousand, eight hundred fifty-two".