19813182212 has 6 divisors (see below), whose sum is σ = 34673068878. Its totient is φ = 9906591104.

The previous prime is 19813182203. The next prime is 19813182217. The reversal of 19813182212 is 21228131891.

It can be written as a sum of positive squares in only one way, i.e., 11723259076 + 8089923136 = 108274^2 + 89944^2 .

It is a super-3 number, since 3×19813182212³ (a number of 32 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (19813182217) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2476647773 + ... + 2476647780.

It is an arithmetic number, because the mean of its divisors is an integer number (5778844813).

Almost surely, 2^19813182212 is an apocalyptic number.

It is an amenable number.

19813182212 is a deficient number, since it is larger than the sum of its proper divisors (14859886666).

19813182212 is a wasteful number, since it uses less digits than its factorization.

19813182212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4953295557 (or 4953295555 counting only the distinct ones).

The product of its digits is 13824, while the sum is 38.

The spelling of 19813182212 in words is "nineteen billion, eight hundred thirteen million, one hundred eighty-two thousand, two hundred twelve".