18485509194822 has 32 divisors (see below), whose sum is σ = 37131127274592. Its totient is φ = 6135153629184.

The previous prime is 18485509194799. The next prime is 18485509194857. The reversal of 18485509194822 is 22849190558481.

It is a happy number.

It is a super-2 number, since 2×18485509194822² (a number of 27 digits) contains 22 as substring.

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 15 ways as a sum of consecutive naturals, for example, 37975278 + ... + 38458974.

It is an arithmetic number, because the mean of its divisors is an integer number (1160347727331).

Almost surely, 2^{18485509194822} is an apocalyptic number.

18485509194822 is an abundant number, since it is smaller than the sum of its proper divisors (18645618079770).

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

18485509194822 is a wasteful number, since it uses less digits than its factorization.

18485509194822 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 511272.

The product of its (nonzero) digits is 66355200, while the sum is 66.

The spelling of 18485509194822 in words is "eighteen trillion, four hundred eighty-five billion, five hundred nine million, one hundred ninety-four thousand, eight hundred twenty-two".