1053785856 has 72 divisors (see below), whose sum is σ = 2857634640. Its totient is φ = 344621056.

The previous prime is 1053785839. The next prime is 1053785867. The reversal of 1053785856 is 6585873501.

It is a super-2 number, since 2×1053785856² = 2220929260611305472, which contains 22 as substring.

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, 27760 + ... + 53648.

It is an arithmetic number, because the mean of its divisors is an integer number (39689370).

Almost surely, 2^1053785856 is an apocalyptic number.

1053785856 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 1053785856, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1428817320).

1053785856 is an abundant number, since it is smaller than the sum of its proper divisors (1803848784).

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

1053785856 is an equidigital number, since it uses as much as digits as its factorization.

1053785856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25961 (or 25947 counting only the distinct ones).

The product of its (nonzero) digits is 1008000, while the sum is 48.

The square root of 1053785856 is about 32462.0679563086. The cubic root of 1053785856 is about 1017.6164567569.

The spelling of 1053785856 in words is "one billion, fifty-three million, seven hundred eighty-five thousand, eight hundred fifty-six".