981734863 has 2 divisors, whose sum is σ = 981734864. Its totient is φ = 981734862.

The previous prime is 981734861. The next prime is 981734903. The reversal of 981734863 is 368437189.

It is a happy number.

981734863 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 is a cyclic number.

It is not a de Polignac number, because 981734863 - 2¹ = 981734861 is a prime.

Together with 981734861, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (981734861) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 490867431 + 490867432.

It is an arithmetic number, because the mean of its divisors is an integer number (490867432).

Almost surely, 2^981734863 is an apocalyptic number.

981734863 is a deficient number, since it is larger than the sum of its proper divisors (1).

981734863 is an equidigital number, since it uses as much as digits as its factorization.

981734863 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 870912, while the sum is 49.

The square root of 981734863 is about 31332.6485155660. The cubic root of 981734863 is about 993.8741718550.

The spelling of 981734863 in words is "nine hundred eighty-one million, seven hundred thirty-four thousand, eight hundred sixty-three".