1143467081 has 4 divisors (see below), whose sum is σ = 1171356564. Its totient is φ = 1115577600.

The previous prime is 1143467077. The next prime is 1143467119. The reversal of 1143467081 is 1807643411.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1807643411 = 7 ⋅258234773.

It can be written as a sum of positive squares in 2 ways, for example, as 596141056 + 547326025 = 24416^2 + 23395^2 .

It is a cyclic number.

It is not a de Polignac number, because 1143467081 - 2² = 1143467077 is a prime.

It is a super-2 number, since 2×1143467081² = 2615033930661321122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1143467041) 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, 13944680 + ... + 13944761.

It is an arithmetic number, because the mean of its divisors is an integer number (292839141).

Almost surely, 2^1143467081 is an apocalyptic number.

It is an amenable number.

1143467081 is a deficient number, since it is larger than the sum of its proper divisors (27889483).

1143467081 is an equidigital number, since it uses as much as digits as its factorization.

1143467081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27889482.

The product of its (nonzero) digits is 16128, while the sum is 35.

The square root of 1143467081 is about 33815.1900926196. The cubic root of 1143467081 is about 1045.7018799149.

The spelling of 1143467081 in words is "one billion, one hundred forty-three million, four hundred sixty-seven thousand, eighty-one".