1143355847 has 2 divisors, whose sum is σ = 1143355848. Its totient is φ = 1143355846.

The previous prime is 1143355841. The next prime is 1143355849. The reversal of 1143355847 is 7485533411.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1143355847 is a prime.

Together with 1143355849, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1143355841) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 571677923 + 571677924.

It is an arithmetic number, because the mean of its divisors is an integer number (571677924).

Almost surely, 2^1143355847 is an apocalyptic number.

1143355847 is a deficient number, since it is larger than the sum of its proper divisors (1).

1143355847 is an equidigital number, since it uses as much as digits as its factorization.

1143355847 is an evil number, because the sum of its binary digits is even.

The product of its digits is 201600, while the sum is 41.

The square root of 1143355847 is about 33813.5453184075. The cubic root of 1143355847 is about 1045.6679709443.

The spelling of 1143355847 in words is "one billion, one hundred forty-three million, three hundred fifty-five thousand, eight hundred forty-seven".