81926083 has 2 divisors, whose sum is σ = 81926084. Its totient is φ = 81926082.

The previous prime is 81926057. The next prime is 81926099. The reversal of 81926083 is 38062918.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-81926083 is a prime.

It is not a weakly prime, because it can be changed into another prime (81926003) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40963041 + 40963042.

It is an arithmetic number, because the mean of its divisors is an integer number (40963042).

Almost surely, 2^81926083 is an apocalyptic number.

81926083 is a deficient number, since it is larger than the sum of its proper divisors (1).

81926083 is an equidigital number, since it uses as much as digits as its factorization.

81926083 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 20736, while the sum is 37.

The square root of 81926083 is about 9051.3028343990. The cubic root of 81926083 is about 434.3175682604.

The spelling of 81926083 in words is "eighty-one million, nine hundred twenty-six thousand, eighty-three".