1085616609 has 32 divisors (see below), whose sum is σ = 1841510400. Its totient is φ = 563950800.

The previous prime is 1085616599. The next prime is 1085616619. The reversal of 1085616609 is 9066165801.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (1085616599) and next prime (1085616619).

It is not a de Polignac number, because 1085616609 - 2⁵ = 1085616577 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1085616619) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 36637 + ... + 59274.

It is an arithmetic number, because the mean of its divisors is an integer number (57547200).

Almost surely, 2^1085616609 is an apocalyptic number.

It is an amenable number.

1085616609 is a deficient number, since it is larger than the sum of its proper divisors (755893791).

1085616609 is an equidigital number, since it uses as much as digits as its factorization.

1085616609 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 95946 (or 95932 counting only the distinct ones).

The product of its (nonzero) digits is 77760, while the sum is 42.

The square root of 1085616609 is about 32948.6966206556. The cubic root of 1085616609 is about 1027.7610615298.

The spelling of 1085616609 in words is "one billion, eighty-five million, six hundred sixteen thousand, six hundred nine".