1143065860 has 12 divisors (see below), whose sum is σ = 2400438348. Its totient is φ = 457226336.

The previous prime is 1143065843. The next prime is 1143065863. The reversal of 1143065860 is 685603411.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 893172996 + 249892864 = 29886^2 + 15808^2 .

It is not an unprimeable number, because it can be changed into a prime (1143065863) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 28576627 + ... + 28576666.

It is an arithmetic number, because the mean of its divisors is an integer number (200036529).

Almost surely, 2^1143065860 is an apocalyptic number.

1143065860 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1143065860 is an abundant number, since it is smaller than the sum of its proper divisors (1257372488).

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

1143065860 is a wasteful number, since it uses less digits than its factorization.

1143065860 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57153302 (or 57153300 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 34.

The square root of 1143065860 is about 33809.2570163853. The cubic root of 1143065860 is about 1045.5795599280.

The spelling of 1143065860 in words is "one billion, one hundred forty-three million, sixty-five thousand, eight hundred sixty".