18584622852 has 12 divisors (see below), whose sum is σ = 43364120016. Its totient is φ = 6194874280.

The previous prime is 18584622809. The next prime is 18584622899. The reversal of 18584622852 is 25822648581.

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-2 number, since 2×18584622852² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 18584622795 and 18584622804.

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 3 ways as a sum of consecutive naturals, for example, 774359274 + ... + 774359297.

It is an arithmetic number, because the mean of its divisors is an integer number (3613676668).

Almost surely, 2^18584622852 is an apocalyptic number.

18584622852 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

18584622852 is an abundant number, since it is smaller than the sum of its proper divisors (24779497164).

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

18584622852 is a wasteful number, since it uses less digits than its factorization.

18584622852 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1548718578 (or 1548718576 counting only the distinct ones).

The product of its digits is 2457600, while the sum is 51.

The spelling of 18584622852 in words is "eighteen billion, five hundred eighty-four million, six hundred twenty-two thousand, eight hundred fifty-two".