6181969 has 2 divisors, whose sum is σ = 6181970. Its totient is φ = 6181968.

The previous prime is 6181949. The next prime is 6181993. The reversal of 6181969 is 9691816.

6181969 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6066369 + 115600 = 2463^2 + 340^2 .

It is a cyclic number.

It is not a de Polignac number, because 6181969 - 2⁵ = 6181937 is a prime.

It is a super-2 number, since 2×6181969² = 76433481433922, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (6181919) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3090984 + 3090985.

It is an arithmetic number, because the mean of its divisors is an integer number (3090985).

Almost surely, 2^6181969 is an apocalyptic number.

It is an amenable number.

6181969 is a deficient number, since it is larger than the sum of its proper divisors (1).

6181969 is an equidigital number, since it uses as much as digits as its factorization.

6181969 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 23328, while the sum is 40.

The square root of 6181969 is about 2486.3565713710. The cubic root of 6181969 is about 183.5307929426.

The spelling of 6181969 in words is "six million, one hundred eighty-one thousand, nine hundred sixty-nine".