81168083 has 2 divisors, whose sum is σ = 81168084. Its totient is φ = 81168082.

The previous prime is 81168007. The next prime is 81168103. The reversal of 81168083 is 38086118.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 81168083 - 2¹⁰ = 81167059 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (81168383) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40584041 + 40584042.

It is an arithmetic number, because the mean of its divisors is an integer number (40584042).

Almost surely, 2^81168083 is an apocalyptic number.

81168083 is a deficient number, since it is larger than the sum of its proper divisors (1).

81168083 is an equidigital number, since it uses as much as digits as its factorization.

81168083 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9216, while the sum is 35.

The square root of 81168083 is about 9009.3331051749. Note that the first 3 decimals coincide. The cubic root of 81168083 is about 432.9739453483.

The spelling of 81168083 in words is "eighty-one million, one hundred sixty-eight thousand, eighty-three".