18295220052 has 36 divisors (see below), whose sum is σ = 46723025076. Its totient is φ = 6035535360.

The previous prime is 18295220029. The next prime is 18295220063. The reversal of 18295220052 is 25002259281.

18295220052 is a `hidden beast` number, since 1 + 82 + 9 + 522 + 0 + 0 + 52 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 14441790276 + 3853429776 = 120174^2 + 62076^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a super-2 number, since 2×18295220052² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 18295219989 and 18295220016.

It is a congruent number.

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 11 ways as a sum of consecutive naturals, for example, 2616099 + ... + 2623082.

Almost surely, 2^18295220052 is an apocalyptic number.

18295220052 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

18295220052 is an abundant number, since it is smaller than the sum of its proper divisors (28427805024).

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

18295220052 is a wasteful number, since it uses less digits than its factorization.

18295220052 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5239288 (or 5239283 counting only the distinct ones).

The product of its (nonzero) digits is 28800, while the sum is 36.

The spelling of 18295220052 in words is "eighteen billion, two hundred ninety-five million, two hundred twenty thousand, fifty-two".