1068735391 has 2 divisors, whose sum is σ = 1068735392. Its totient is φ = 1068735390.

The previous prime is 1068735359. The next prime is 1068735419. The reversal of 1068735391 is 1935378601.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1068735391 - 2⁵ = 1068735359 is a prime.

It is a super-2 number, since 2×1068735391² = 2284390671951845762, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1068735341) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 534367695 + 534367696.

It is an arithmetic number, because the mean of its divisors is an integer number (534367696).

Almost surely, 2^1068735391 is an apocalyptic number.

1068735391 is a deficient number, since it is larger than the sum of its proper divisors (1).

1068735391 is an equidigital number, since it uses as much as digits as its factorization.

1068735391 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 136080, while the sum is 43.

The square root of 1068735391 is about 32691.5186401611. The cubic root of 1068735391 is about 1022.4060178683.

The spelling of 1068735391 in words is "one billion, sixty-eight million, seven hundred thirty-five thousand, three hundred ninety-one".