3168189963481 has 3 divisors (see below), whose sum is σ = 3168191743423. Its totient is φ = 3168188183540.

The previous prime is 3168189963457. The next prime is 3168189963503. The reversal of 3168189963481 is 1843699818613.

The square root of 3168189963481 is 1779941.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in only one way, i.e., 103239473481 + 3064950490000 = 321309^2 + 1750700^2 .

It is not a de Polignac number, because 3168189963481 - 2³³ = 3159600028889 is a prime.

It is a super-2 number, since 2×3168189963481² (a number of 26 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3168189961481) by changing a digit.

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 2 ways as a sum of consecutive naturals, for example, 889971 + ... + 2669911.

Almost surely, 2^{3168189963481} is an apocalyptic number.

3168189963481 is the 1779941-st square number.

3168189963481 is the 889971-st centered octagonal number.

It is an amenable number.

3168189963481 is a deficient number, since it is larger than the sum of its proper divisors (1779942).

3168189963481 is an frugal number, since it uses more digits than its factorization.

3168189963481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3559882 (or 1779941 counting only the distinct ones).

The product of its digits is 53747712, while the sum is 67.

The spelling of 3168189963481 in words is "three trillion, one hundred sixty-eight billion, one hundred eighty-nine million, nine hundred sixty-three thousand, four hundred eighty-one".