1085091659 has 2 divisors, whose sum is σ = 1085091660. Its totient is φ = 1085091658.

The previous prime is 1085091647. The next prime is 1085091661. The reversal of 1085091659 is 9561905801.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1085091659 - 2⁴ = 1085091643 is a prime.

Together with 1085091661, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (1085090659) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 542545829 + 542545830.

It is an arithmetic number, because the mean of its divisors is an integer number (542545830).

Almost surely, 2^1085091659 is an apocalyptic number.

1085091659 is a deficient number, since it is larger than the sum of its proper divisors (1).

1085091659 is an equidigital number, since it uses as much as digits as its factorization.

1085091659 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 97200, while the sum is 44.

The square root of 1085091659 is about 32940.7294849401. The cubic root of 1085091659 is about 1027.5953768396.

The spelling of 1085091659 in words is "one billion, eighty-five million, ninety-one thousand, six hundred fifty-nine".