18768206208 has 32 divisors (see below), whose sum is σ = 49853048760. Its totient is φ = 6256068608.

The previous prime is 18768206203. The next prime is 18768206231. The reversal of 18768206208 is 80260286781.

It is a tau number, because it is divible by the number of its divisors (32).

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18768206203) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24437385 + ... + 24438152.

Almost surely, 2^18768206208 is an apocalyptic number.

It is an amenable number.

18768206208 is an abundant number, since it is smaller than the sum of its proper divisors (31084842552).

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

18768206208 is an equidigital number, since it uses as much as digits as its factorization.

18768206208 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48875554 (or 48875542 counting only the distinct ones).

The product of its (nonzero) digits is 516096, while the sum is 48.

The spelling of 18768206208 in words is "eighteen billion, seven hundred sixty-eight million, two hundred six thousand, two hundred eight".