1085557712 has 20 divisors (see below), whose sum is σ = 2226990276. Its totient is φ = 510850560.

The previous prime is 1085557709. The next prime is 1085557727. The reversal of 1085557712 is 2177555801.

It can be written as a sum of positive squares in 2 ways, for example, as 490002496 + 595555216 = 22136^2 + 24404^2 .

It is a Smith number, since the sum of its digits (41) coincides with the sum of the digits of its prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 1085557712.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1995239 + ... + 1995782.

Almost surely, 2^1085557712 is an apocalyptic number.

It is an amenable number.

1085557712 is an abundant number, since it is smaller than the sum of its proper divisors (1141432564).

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

1085557712 is a wasteful number, since it uses less digits than its factorization.

1085557712 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3991046 (or 3991040 counting only the distinct ones).

The product of its (nonzero) digits is 98000, while the sum is 41.

The square root of 1085557712 is about 32947.8028402502. The cubic root of 1085557712 is about 1027.7424751223.

The spelling of 1085557712 in words is "one billion, eighty-five million, five hundred fifty-seven thousand, seven hundred twelve".