3189689431517 has 2 divisors, whose sum is σ = 3189689431518. Its totient is φ = 3189689431516.

The previous prime is 3189689431457. The next prime is 3189689431543. The reversal of 3189689431517 is 7151349869813.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2835657291481 + 354032140036 = 1683941^2 + 595006^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3189689431517 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3189689431417) 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 as a sum of consecutive naturals, namely, 1594844715758 + 1594844715759.

It is an arithmetic number, because the mean of its divisors is an integer number (1594844715759).

Almost surely, 2^{3189689431517} is an apocalyptic number.

It is an amenable number.

3189689431517 is a deficient number, since it is larger than the sum of its proper divisors (1).

3189689431517 is an equidigital number, since it uses as much as digits as its factorization.

3189689431517 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 39191040, while the sum is 65.

The spelling of 3189689431517 in words is "three trillion, one hundred eighty-nine billion, six hundred eighty-nine million, four hundred thirty-one thousand, five hundred seventeen".