18168074522 has 16 divisors (see below), whose sum is σ = 31074806952. Its totient is φ = 7892014080.

The previous prime is 18168074501. The next prime is 18168074537. The reversal of 18168074522 is 22547086181.

It is a Cunningham number, because it is equal to 134789²+1.

It can be written as a sum of positive squares in 4 ways, for example, as 18004004041 + 164070481 = 134179^2 + 12809^2 .

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 20551679 + ... + 20552562.

Almost surely, 2^18168074522 is an apocalyptic number.

18168074522 is a deficient number, since it is larger than the sum of its proper divisors (12906732430).

18168074522 is a wasteful number, since it uses less digits than its factorization.

18168074522 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41104273.

The product of its (nonzero) digits is 215040, while the sum is 44.

The spelling of 18168074522 in words is "eighteen billion, one hundred sixty-eight million, seventy-four thousand, five hundred twenty-two".