981840833 has 2 divisors, whose sum is σ = 981840834. Its totient is φ = 981840832.

The previous prime is 981840829. The next prime is 981840851. The reversal of 981840833 is 338048189.

981840833 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 980441344 + 1399489 = 31312^2 + 1183^2 .

It is a cyclic number.

It is not a de Polignac number, because 981840833 - 2² = 981840829 is a prime.

It is a super-2 number, since 2×981840833² = 1928022842692267778, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (981840823) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 490920416 + 490920417.

It is an arithmetic number, because the mean of its divisors is an integer number (490920417).

Almost surely, 2^981840833 is an apocalyptic number.

It is an amenable number.

981840833 is a deficient number, since it is larger than the sum of its proper divisors (1).

981840833 is an equidigital number, since it uses as much as digits as its factorization.

981840833 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 165888, while the sum is 44.

The square root of 981840833 is about 31334.3395175325. The cubic root of 981840833 is about 993.9099306804.

The spelling of 981840833 in words is "nine hundred eighty-one million, eight hundred forty thousand, eight hundred thirty-three".