186969323669 has 2 divisors, whose sum is σ = 186969323670. Its totient is φ = 186969323668.

The previous prime is 186969323587. The next prime is 186969323677. The reversal of 186969323669 is 966323969681.

186969323669 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 176593252900 + 10376070769 = 420230^2 + 101863^2 .

It is a cyclic number.

It is not a de Polignac number, because 186969323669 - 2⁸ = 186969323413 is a prime.

It is a super-2 number, since 2×186969323669² (a number of 23 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 186969323599 and 186969323608.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (186969323369) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 93484661834 + 93484661835.

It is an arithmetic number, because the mean of its divisors is an integer number (93484661835).

Almost surely, 2^186969323669 is an apocalyptic number.

It is an amenable number.

186969323669 is a deficient number, since it is larger than the sum of its proper divisors (1).

186969323669 is an equidigital number, since it uses as much as digits as its factorization.

186969323669 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 136048896, while the sum is 68.

The spelling of 186969323669 in words is "one hundred eighty-six billion, nine hundred sixty-nine million, three hundred twenty-three thousand, six hundred sixty-nine".