1081869085 has 16 divisors (see below), whose sum is σ = 1454545152. Its totient is φ = 765547200.

The previous prime is 1081869083. The next prime is 1081869161. The reversal of 1081869085 is 5809681801.

It is not a de Polignac number, because 1081869085 - 2¹ = 1081869083 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 (1081869083) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 263781 + ... + 267850.

It is an arithmetic number, because the mean of its divisors is an integer number (90909072).

Almost surely, 2^1081869085 is an apocalyptic number.

It is an amenable number.

1081869085 is a deficient number, since it is larger than the sum of its proper divisors (372676067).

1081869085 is a wasteful number, since it uses less digits than its factorization.

1081869085 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 531684.

The product of its (nonzero) digits is 138240, while the sum is 46.

The square root of 1081869085 is about 32891.7783800147. The cubic root of 1081869085 is about 1026.5770954891.

The spelling of 1081869085 in words is "one billion, eighty-one million, eight hundred sixty-nine thousand, eighty-five".