1068473821 has 4 divisors (see below), whose sum is σ = 1068691644. Its totient is φ = 1068256000.

The previous prime is 1068473789. The next prime is 1068473837. The reversal of 1068473821 is 1283748601.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 961868196 + 106605625 = 31014^2 + 10325^2 .

It is a cyclic number.

It is not a de Polignac number, because 1068473821 - 2⁵ = 1068473789 is a prime.

It is a super-2 number, since 2×1068473821² = 2283272612324680082, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1068473881) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 101380 + ... + 111421.

It is an arithmetic number, because the mean of its divisors is an integer number (267172911).

Almost surely, 2^1068473821 is an apocalyptic number.

It is an amenable number.

1068473821 is a deficient number, since it is larger than the sum of its proper divisors (217823).

1068473821 is an equidigital number, since it uses as much as digits as its factorization.

1068473821 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 217822.

The product of its (nonzero) digits is 64512, while the sum is 40.

The square root of 1068473821 is about 32687.5178164387. The cubic root of 1068473821 is about 1022.3226007241.

The spelling of 1068473821 in words is "one billion, sixty-eight million, four hundred seventy-three thousand, eight hundred twenty-one".