1068535591 has 2 divisors, whose sum is σ = 1068535592. Its totient is φ = 1068535590.

The previous prime is 1068535577. The next prime is 1068535603. The reversal of 1068535591 is 1955358601.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1068535591 - 2⁷ = 1068535463 is a prime.

It is a super-2 number, since 2×1068535591² = 2283536618467438562, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1068535511) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 534267795 + 534267796.

It is an arithmetic number, because the mean of its divisors is an integer number (534267796).

Almost surely, 2^1068535591 is an apocalyptic number.

1068535591 is a deficient number, since it is larger than the sum of its proper divisors (1).

1068535591 is an equidigital number, since it uses as much as digits as its factorization.

1068535591 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 162000, while the sum is 43.

The square root of 1068535591 is about 32688.4626588648. The cubic root of 1068535591 is about 1022.3423009884.

The spelling of 1068535591 in words is "one billion, sixty-eight million, five hundred thirty-five thousand, five hundred ninety-one".