1143580081 has 12 divisors (see below), whose sum is σ = 1330968240. Its totient is φ = 979709640.

The previous prime is 1143580073. The next prime is 1143580117. The reversal of 1143580081 is 1800853411.

It is not a de Polignac number, because 1143580081 - 2³ = 1143580073 is a prime.

It is a super-2 number, since 2×1143580081² = 2615550803319933122, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1143580381) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 115746 + ... + 125236.

It is an arithmetic number, because the mean of its divisors is an integer number (110914020).

Almost surely, 2^1143580081 is an apocalyptic number.

It is an amenable number.

1143580081 is a deficient number, since it is larger than the sum of its proper divisors (187388159).

1143580081 is an equidigital number, since it uses as much as digits as its factorization.

1143580081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11964 (or 11957 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 31.

The square root of 1143580081 is about 33816.8608980786. The cubic root of 1143580081 is about 1045.7363249876.

The spelling of 1143580081 in words is "one billion, one hundred forty-three million, five hundred eighty thousand, eighty-one".