1065855120 has 360 divisors, whose sum is σ = 3888417792. Its totient is φ = 241274880.

The previous prime is 1065855097. The next prime is 1065855149. The reversal of 1065855120 is 215585601.

1065855120 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×1065855120² = 2272094273660428800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 8392497 + ... + 8392623.

Almost surely, 2^1065855120 is an apocalyptic number.

1065855120 is a gapful number since it is divisible by the number (10) 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 1065855120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1944208896).

1065855120 is an abundant number, since it is smaller than the sum of its proper divisors (2822562672).

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

1065855120 is a wasteful number, since it uses less digits than its factorization.

1065855120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 199 (or 165 counting only the distinct ones).

The product of its (nonzero) digits is 12000, while the sum is 33.

The square root of 1065855120 is about 32647.4366528216. The cubic root of 1065855120 is about 1021.4867208372.

The spelling of 1065855120 in words is "one billion, sixty-five million, eight hundred fifty-five thousand, one hundred twenty".