1143605641 has 2 divisors, whose sum is σ = 1143605642. Its totient is φ = 1143605640.

The previous prime is 1143605627. The next prime is 1143605693. The reversal of 1143605641 is 1465063411.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1137375625 + 6230016 = 33725^2 + 2496^2 .

It is a cyclic number.

It is not a de Polignac number, because 1143605641 - 2⁹ = 1143605129 is a prime.

It is not a weakly prime, because it can be changed into another prime (1143602641) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 571802820 + 571802821.

It is an arithmetic number, because the mean of its divisors is an integer number (571802821).

Almost surely, 2^1143605641 is an apocalyptic number.

It is an amenable number.

1143605641 is a deficient number, since it is larger than the sum of its proper divisors (1).

1143605641 is an equidigital number, since it uses as much as digits as its factorization.

1143605641 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8640, while the sum is 31.

The square root of 1143605641 is about 33817.2388139540. The cubic root of 1143605641 is about 1045.7441159655.

The spelling of 1143605641 in words is "one billion, one hundred forty-three million, six hundred five thousand, six hundred forty-one".