81410083 has 2 divisors, whose sum is σ = 81410084. Its totient is φ = 81410082.

The previous prime is 81410057. The next prime is 81410089. The reversal of 81410083 is 38001418.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 81410083 - 2⁹ = 81409571 is a prime.

It is a super-2 number, since 2×81410083² = 13255203228133778, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (81410089) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40705041 + 40705042.

It is an arithmetic number, because the mean of its divisors is an integer number (40705042).

Almost surely, 2^81410083 is an apocalyptic number.

81410083 is a deficient number, since it is larger than the sum of its proper divisors (1).

81410083 is an equidigital number, since it uses as much as digits as its factorization.

81410083 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 768, while the sum is 25.

The square root of 81410083 is about 9022.7536262496. The cubic root of 81410083 is about 433.4038176602.

The spelling of 81410083 in words is "eighty-one million, four hundred ten thousand, eighty-three".