1085791252 has 72 divisors (see below), whose sum is σ = 2468489856. Its totient is φ = 406886976.

The previous prime is 1085791249. The next prime is 1085791279. The reversal of 1085791252 is 2521975801.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 127273 + ... + 135535.

Almost surely, 2^1085791252 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1085791252, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1234244928).

1085791252 is an abundant number, since it is smaller than the sum of its proper divisors (1382698604).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1085791252 is a wasteful number, since it uses less digits than its factorization.

1085791252 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8325 (or 8304 counting only the distinct ones).

The product of its (nonzero) digits is 50400, while the sum is 40.

The square root of 1085791252 is about 32951.3467403079. The cubic root of 1085791252 is about 1027.8161705034.

The spelling of 1085791252 in words is "one billion, eighty-five million, seven hundred ninety-one thousand, two hundred fifty-two".