1084857856 has 80 divisors (see below), whose sum is σ = 2317512384. Its totient is φ = 505544704.

The previous prime is 1084857821. The next prime is 1084857857. The reversal of 1084857856 is 6587584801.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1084857857) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 983001 + ... + 984103.

Almost surely, 2^1084857856 is an apocalyptic number.

1084857856 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1084857856, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1158756192).

1084857856 is an abundant number, since it is smaller than the sum of its proper divisors (1232654528).

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

1084857856 is a wasteful number, since it uses less digits than its factorization.

1084857856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1251 (or 1235 counting only the distinct ones).

The product of its (nonzero) digits is 2150400, while the sum is 52.

The square root of 1084857856 is about 32937.1804500628. The cubic root of 1084857856 is about 1027.5215667493.

The spelling of 1084857856 in words is "one billion, eighty-four million, eight hundred fifty-seven thousand, eight hundred fifty-six".