6423436181 has 2 divisors, whose sum is σ = 6423436182. Its totient is φ = 6423436180.

The previous prime is 6423436051. The next prime is 6423436193. The reversal of 6423436181 is 1816343246.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6401440081 + 21996100 = 80009^2 + 4690^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6423436181 is a prime.

It is a super-2 number, since 2×6423436181² = 82521064742759729522, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6423736181) 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, 3211718090 + 3211718091.

It is an arithmetic number, because the mean of its divisors is an integer number (3211718091).

Almost surely, 2^6423436181 is an apocalyptic number.

It is an amenable number.

6423436181 is a deficient number, since it is larger than the sum of its proper divisors (1).

6423436181 is an equidigital number, since it uses as much as digits as its factorization.

6423436181 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 82944, while the sum is 38.

The square root of 6423436181 is about 80146.3422808552. The cubic root of 6423436181 is about 1858.8990460186.

The spelling of 6423436181 in words is "six billion, four hundred twenty-three million, four hundred thirty-six thousand, one hundred eighty-one".