1068323381 has 4 divisors (see below), whose sum is σ = 1069681632. Its totient is φ = 1066965132.

The previous prime is 1068323309. The next prime is 1068323383. The reversal of 1068323381 is 1833238601.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 1833238601 = 9463 ⋅193727.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1068323381 is a prime.

It is a super-2 number, since 2×1068323381² = 2282629692782542322, 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 (1068323383) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 677945 + ... + 679518.

It is an arithmetic number, because the mean of its divisors is an integer number (267420408).

Almost surely, 2^1068323381 is an apocalyptic number.

It is an amenable number.

1068323381 is a deficient number, since it is larger than the sum of its proper divisors (1358251).

1068323381 is an equidigital number, since it uses as much as digits as its factorization.

1068323381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1358250.

The product of its (nonzero) digits is 20736, while the sum is 35.

The square root of 1068323381 is about 32685.2165512178. The cubic root of 1068323381 is about 1022.2746178199.

The spelling of 1068323381 in words is "one billion, sixty-eight million, three hundred twenty-three thousand, three hundred eighty-one".