81833363 has 2 divisors, whose sum is σ = 81833364. Its totient is φ = 81833362.

The previous prime is 81833347. The next prime is 81833383. The reversal of 81833363 is 36333818.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 81833363 - 2⁴ = 81833347 is a prime.

It is not a weakly prime, because it can be changed into another prime (81833303) 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, 40916681 + 40916682.

It is an arithmetic number, because the mean of its divisors is an integer number (40916682).

Almost surely, 2^81833363 is an apocalyptic number.

81833363 is a deficient number, since it is larger than the sum of its proper divisors (1).

81833363 is an equidigital number, since it uses as much as digits as its factorization.

81833363 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 31104, while the sum is 35.

The square root of 81833363 is about 9046.1794698093. The cubic root of 81833363 is about 434.1536598328.

The spelling of 81833363 in words is "eighty-one million, eight hundred thirty-three thousand, three hundred sixty-three".