1808452772212 has 12 divisors (see below), whose sum is σ = 3350956607460. Its totient is φ = 851036598656.

The previous prime is 1808452772183. The next prime is 1808452772219. The reversal of 1808452772212 is 2122772548081.

It can be written as a sum of positive squares in 2 ways, for example, as 916856040676 + 891596731536 = 957526^2 + 944244^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1808452772219) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13297446787 + ... + 13297446922.

It is an arithmetic number, because the mean of its divisors is an integer number (279246383955).

Almost surely, 2^{1808452772212} is an apocalyptic number.

It is an amenable number.

1808452772212 is a deficient number, since it is larger than the sum of its proper divisors (1542503835248).

1808452772212 is a wasteful number, since it uses less digits than its factorization.

1808452772212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26594893730 (or 26594893728 counting only the distinct ones).

The product of its (nonzero) digits is 1003520, while the sum is 49.

The spelling of 1808452772212 in words is "one trillion, eight hundred eight billion, four hundred fifty-two million, seven hundred seventy-two thousand, two hundred twelve".