8165064431 has 2 divisors, whose sum is σ = 8165064432. Its totient is φ = 8165064430.

The previous prime is 8165064403. The next prime is 8165064473. The reversal of 8165064431 is 1344605618.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-8165064431 is a prime.

It is a super-2 number, since 2×8165064431² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8165064631) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4082532215 + 4082532216.

It is an arithmetic number, because the mean of its divisors is an integer number (4082532216).

Almost surely, 2^8165064431 is an apocalyptic number.

8165064431 is a deficient number, since it is larger than the sum of its proper divisors (1).

8165064431 is an equidigital number, since it uses as much as digits as its factorization.

8165064431 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 69120, while the sum is 38.

The square root of 8165064431 is about 90360.7460737238. The cubic root of 8165064431 is about 2013.6618339036.

The spelling of 8165064431 in words is "eight billion, one hundred sixty-five million, sixty-four thousand, four hundred thirty-one".