6181641287 has 2 divisors, whose sum is σ = 6181641288. Its totient is φ = 6181641286.

The previous prime is 6181641283. The next prime is 6181641289. The reversal of 6181641287 is 7821461816.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 6181641287 - 2² = 6181641283 is a prime.

It is a super-2 number, since 2×6181641287² = 76425378002286032738, which contains 22 as substring.

Together with 6181641289, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6181641283) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3090820643 + 3090820644.

It is an arithmetic number, because the mean of its divisors is an integer number (3090820644).

Almost surely, 2^6181641287 is an apocalyptic number.

6181641287 is a deficient number, since it is larger than the sum of its proper divisors (1).

6181641287 is an equidigital number, since it uses as much as digits as its factorization.

6181641287 is an evil number, because the sum of its binary digits is even.

The product of its digits is 129024, while the sum is 44.

The square root of 6181641287 is about 78623.4143687490. The cubic root of 6181641287 is about 1835.2754982865.

The spelling of 6181641287 in words is "six billion, one hundred eighty-one million, six hundred forty-one thousand, two hundred eighty-seven".