1085529109 has 32 divisors (see below), whose sum is σ = 1356692480. Its totient is φ = 847832832.

The previous prime is 1085529089. The next prime is 1085529127. The reversal of 1085529109 is 9019255801.

It is not a de Polignac number, because 1085529109 - 2⁹ = 1085528597 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1085529409) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 381757 + ... + 384589.

It is an arithmetic number, because the mean of its divisors is an integer number (42396640).

Almost surely, 2^1085529109 is an apocalyptic number.

1085529109 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

It is an amenable number.

1085529109 is a deficient number, since it is larger than the sum of its proper divisors (271163371).

1085529109 is a wasteful number, since it uses less digits than its factorization.

1085529109 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2969.

The product of its (nonzero) digits is 32400, while the sum is 40.

The square root of 1085529109 is about 32947.3687720279. The cubic root of 1085529109 is about 1027.7334484946.

The spelling of 1085529109 in words is "one billion, eighty-five million, five hundred twenty-nine thousand, one hundred nine".