1085249856 has 56 divisors (see below), whose sum is σ = 2875239360. Its totient is φ = 361265152.

The previous prime is 1085249833. The next prime is 1085249863. The reversal of 1085249856 is 6589425801.

It is a hoax number, since the sum of its digits (48) coincides with the sum of the digits of its distinct prime factors.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 157720 + ... + 164456.

It is an arithmetic number, because the mean of its divisors is an integer number (51343560).

Almost surely, 2^1085249856 is an apocalyptic number.

1085249856 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1085249856 is an abundant number, since it is smaller than the sum of its proper divisors (1789989504).

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

1085249856 is an equidigital number, since it uses as much as digits as its factorization.

1085249856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7591 (or 7581 counting only the distinct ones).

The product of its (nonzero) digits is 691200, while the sum is 48.

The square root of 1085249856 is about 32943.1306344737. The cubic root of 1085249856 is about 1027.6453125923.

The spelling of 1085249856 in words is "one billion, eighty-five million, two hundred forty-nine thousand, eight hundred fifty-six".