18685350201 has 16 divisors (see below), whose sum is σ = 28749353984. Its totient is φ = 10573678224.

The previous prime is 18685350197. The next prime is 18685350227. The reversal of 18685350201 is 10205358681.

It is not a de Polignac number, because 18685350201 - 2² = 18685350197 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 18685350201.

It is not an unprimeable number, because it can be changed into a prime (18685350241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4317151 + ... + 4321476.

It is an arithmetic number, because the mean of its divisors is an integer number (1796834624).

Almost surely, 2^18685350201 is an apocalyptic number.

It is an amenable number.

18685350201 is a deficient number, since it is larger than the sum of its proper divisors (10064003783).

18685350201 is a wasteful number, since it uses less digits than its factorization.

18685350201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8638740.

The product of its (nonzero) digits is 57600, while the sum is 39.

The spelling of 18685350201 in words is "eighteen billion, six hundred eighty-five million, three hundred fifty thousand, two hundred one".