18722050036 has 12 divisors (see below), whose sum is σ = 32766102628. Its totient is φ = 9360306432.

The previous prime is 18722050021. The next prime is 18722050063. The reversal of 18722050036 is 63005022781.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 11404958436 + 7317091600 = 106794^2 + 85540^2 .

It is a junction number, because it is equal to n+sod(n) for n = 18722049983 and 18722050010.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 118731 + ... + 227026.

Almost surely, 2^18722050036 is an apocalyptic number.

It is an amenable number.

18722050036 is a deficient number, since it is larger than the sum of its proper divisors (14044052592).

18722050036 is a wasteful number, since it uses less digits than its factorization.

18722050036 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 359298 (or 359296 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 34.

The spelling of 18722050036 in words is "eighteen billion, seven hundred twenty-two million, fifty thousand, thirty-six".