3188163882581 has 2 divisors, whose sum is σ = 3188163882582. Its totient is φ = 3188163882580.

The previous prime is 3188163882511. The next prime is 3188163882611. The reversal of 3188163882581 is 1852883618813.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3182420516356 + 5743366225 = 1783934^2 + 75785^2 .

It is a cyclic number.

It is not a de Polignac number, because 3188163882581 - 2¹⁰ = 3188163881557 is a prime.

It is a super-2 number, since 2×3188163882581² (a number of 26 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3188163882511) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1594081941290 + 1594081941291.

It is an arithmetic number, because the mean of its divisors is an integer number (1594081941291).

Almost surely, 2^{3188163882581} is an apocalyptic number.

It is an amenable number.

3188163882581 is a deficient number, since it is larger than the sum of its proper divisors (1).

3188163882581 is an equidigital number, since it uses as much as digits as its factorization.

3188163882581 is an evil number, because the sum of its binary digits is even.

The product of its digits is 17694720, while the sum is 62.

The spelling of 3188163882581 in words is "three trillion, one hundred eighty-eight billion, one hundred sixty-three million, eight hundred eighty-two thousand, five hundred eighty-one".