1068936191 has 4 divisors (see below), whose sum is σ = 1080946800. Its totient is φ = 1056925584.

The previous prime is 1068936161. The next prime is 1068936229. The reversal of 1068936191 is 1916398601.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 1068936191 - 2²⁶ = 1001827327 is a prime.

It is a super-2 number, since 2×1068936191² = 2285249160859176962, 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 (1068936101) 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, 6005171 + ... + 6005348.

It is an arithmetic number, because the mean of its divisors is an integer number (270236700).

Almost surely, 2^1068936191 is an apocalyptic number.

1068936191 is a deficient number, since it is larger than the sum of its proper divisors (12010609).

1068936191 is an equidigital number, since it uses as much as digits as its factorization.

1068936191 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12010608.

The product of its (nonzero) digits is 69984, while the sum is 44.

The square root of 1068936191 is about 32694.5896288667. The cubic root of 1068936191 is about 1022.4700456510.

The spelling of 1068936191 in words is "one billion, sixty-eight million, nine hundred thirty-six thousand, one hundred ninety-one".