1065781860 has 192 divisors, whose sum is σ = 3619897344. Its totient is φ = 230745600.

The previous prime is 1065781859. The next prime is 1065781861. The reversal of 1065781860 is 681875601.

1065781860 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (1065781859) and next prime (1065781861).

It is a super-2 number, since 2×1065781860² = 2271781946210119200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1065781861) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 263977 + ... + 267983.

It is an arithmetic number, because the mean of its divisors is an integer number (18853632).

Almost surely, 2^1065781860 is an apocalyptic number.

1065781860 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 1065781860, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1809948672).

1065781860 is an abundant number, since it is smaller than the sum of its proper divisors (2554115484).

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

1065781860 is a wasteful number, since it uses less digits than its factorization.

1065781860 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4074 (or 4072 counting only the distinct ones).

The product of its (nonzero) digits is 80640, while the sum is 42.

The square root of 1065781860 is about 32646.3146465263. The cubic root of 1065781860 is about 1021.4633168334.

The spelling of 1065781860 in words is "one billion, sixty-five million, seven hundred eighty-one thousand, eight hundred sixty".