18767964222 has 180 divisors, whose sum is σ = 49621156200. Its totient is φ = 5286381408.

The previous prime is 18767964221. The next prime is 18767964277. The reversal of 18767964222 is 22246976781.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18767964221) 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 89 ways as a sum of consecutive naturals, for example, 94311279 + ... + 94311477.

It is an arithmetic number, because the mean of its divisors is an integer number (275673090).

Almost surely, 2^18767964222 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 18767964222, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24810578100).

18767964222 is an abundant number, since it is smaller than the sum of its proper divisors (30853191978).

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

18767964222 is a wasteful number, since it uses less digits than its factorization.

18767964222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 445 (or 320 counting only the distinct ones).

The product of its digits is 4064256, while the sum is 54.

The spelling of 18767964222 in words is "eighteen billion, seven hundred sixty-seven million, nine hundred sixty-four thousand, two hundred twenty-two".