18922196368878 has 64 divisors (see below), whose sum is σ = 42249057345792. Its totient is φ = 5600099393280.

The previous prime is 18922196368877. The next prime is 18922196368883. The reversal of 18922196368878 is 87886369122981.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18922196368877) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 29002426 + ... + 29647682.

It is an arithmetic number, because the mean of its divisors is an integer number (660141521028).

Almost surely, 2^{18922196368878} is an apocalyptic number.

18922196368878 is an abundant number, since it is smaller than the sum of its proper divisors (23326860976914).

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

18922196368878 is a wasteful number, since it uses less digits than its factorization.

18922196368878 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 655649.

The product of its digits is 1003290624, while the sum is 78.

The spelling of 18922196368878 in words is "eighteen trillion, nine hundred twenty-two billion, one hundred ninety-six million, three hundred sixty-eight thousand, eight hundred seventy-eight".