1085342565 has 32 divisors (see below), whose sum is σ = 1798557696. Its totient is φ = 558528320.

The previous prime is 1085342507. The next prime is 1085342591. The reversal of 1085342565 is 5652435801.

It is not a de Polignac number, because 1085342565 - 2⁶ = 1085342501 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 39214 + ... + 60896.

It is an arithmetic number, because the mean of its divisors is an integer number (56204928).

Almost surely, 2^1085342565 is an apocalyptic number.

1085342565 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1085342565 is a deficient number, since it is larger than the sum of its proper divisors (713215131).

1085342565 is a wasteful number, since it uses less digits than its factorization.

1085342565 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21809.

The product of its (nonzero) digits is 144000, while the sum is 39.

The square root of 1085342565 is about 32944.5377111290. The cubic root of 1085342565 is about 1027.6745744426.

The spelling of 1085342565 in words is "one billion, eighty-five million, three hundred forty-two thousand, five hundred sixty-five".