1068584981 has 2 divisors, whose sum is σ = 1068584982. Its totient is φ = 1068584980.

The previous prime is 1068584917. The next prime is 1068584983. The reversal of 1068584981 is 1894858601.

1068584981 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 584188900 + 484396081 = 24170^2 + 22009^2 .

It is a cyclic number.

It is not a de Polignac number, because 1068584981 - 2⁶ = 1068584917 is a prime.

It is a super-2 number, since 2×1068584981² = 2283747723237540722, which contains 22 as substring.

Together with 1068584983, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1068584983) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 534292490 + 534292491.

It is an arithmetic number, because the mean of its divisors is an integer number (534292491).

Almost surely, 2^1068584981 is an apocalyptic number.

It is an amenable number.

1068584981 is a deficient number, since it is larger than the sum of its proper divisors (1).

1068584981 is an equidigital number, since it uses as much as digits as its factorization.

1068584981 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 552960, while the sum is 50.

The square root of 1068584981 is about 32689.2181154582. The cubic root of 1068584981 is about 1022.3580523615.

The spelling of 1068584981 in words is "one billion, sixty-eight million, five hundred eighty-four thousand, nine hundred eighty-one".