18863736522 has 32 divisors (see below), whose sum is σ = 40191621120. Its totient is φ = 5885195760.

The previous prime is 18863736467. The next prime is 18863736523. The reversal of 18863736522 is 22563736881.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (18863736523) 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 15 ways as a sum of consecutive naturals, for example, 987354 + ... + 1006277.

It is an arithmetic number, because the mean of its divisors is an integer number (1255988160).

Almost surely, 2^18863736522 is an apocalyptic number.

18863736522 is an abundant number, since it is smaller than the sum of its proper divisors (21327884598).

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

18863736522 is a wasteful number, since it uses less digits than its factorization.

18863736522 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1993738.

The product of its digits is 2903040, while the sum is 51.

The spelling of 18863736522 in words is "eighteen billion, eight hundred sixty-three million, seven hundred thirty-six thousand, five hundred twenty-two".