1085859988 has 12 divisors (see below), whose sum is σ = 1940686272. Its totient is φ = 531378200.

The previous prime is 1085859967. The next prime is 1085859997. The reversal of 1085859988 is 8899585801.

It is a happy number.

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, 2887738 + ... + 2888113.

It is an arithmetic number, because the mean of its divisors is an integer number (161723856).

Almost surely, 2^1085859988 is an apocalyptic number.

It is an amenable number.

1085859988 is a deficient number, since it is larger than the sum of its proper divisors (854826284).

1085859988 is a wasteful number, since it uses less digits than its factorization.

1085859988 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5775902 (or 5775900 counting only the distinct ones).

The product of its (nonzero) digits is 8294400, while the sum is 61.

The square root of 1085859988 is about 32952.3897160737. The cubic root of 1085859988 is about 1027.8378586752.

The spelling of 1085859988 in words is "one billion, eighty-five million, eight hundred fifty-nine thousand, nine hundred eighty-eight".