1085690784 has 24 divisors (see below), whose sum is σ = 2849938560. Its totient is φ = 361896896.

The previous prime is 1085690747. The next prime is 1085690803. The reversal of 1085690784 is 4870965801.

It is a tau number, because it is divible by the number of its divisors (24).

It is a Harshad number since it is a multiple of its sum of digits (48).

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, 5654544 + ... + 5654735.

It is an arithmetic number, because the mean of its divisors is an integer number (118747440).

Almost surely, 2^1085690784 is an apocalyptic number.

It is an amenable number.

1085690784 is an abundant number, since it is smaller than the sum of its proper divisors (1764247776).

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

1085690784 is a wasteful number, since it uses less digits than its factorization.

1085690784 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11309292 (or 11309284 counting only the distinct ones).

The product of its (nonzero) digits is 483840, while the sum is 48.

The square root of 1085690784 is about 32949.8222149984. The cubic root of 1085690784 is about 1027.7844683323.

The spelling of 1085690784 in words is "one billion, eighty-five million, six hundred ninety thousand, seven hundred eighty-four".