1143232249 has 2 divisors, whose sum is σ = 1143232250. Its totient is φ = 1143232248.

The previous prime is 1143232243. The next prime is 1143232309. The reversal of 1143232249 is 9422323411.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1061456400 + 81775849 = 32580^2 + 9043^2 .

It is a cyclic number.

It is not a de Polignac number, because 1143232249 - 2⁷ = 1143232121 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1143232249.

It is not a weakly prime, because it can be changed into another prime (1143232243) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 571616124 + 571616125.

It is an arithmetic number, because the mean of its divisors is an integer number (571616125).

Almost surely, 2^1143232249 is an apocalyptic number.

It is an amenable number.

1143232249 is a deficient number, since it is larger than the sum of its proper divisors (1).

1143232249 is an equidigital number, since it uses as much as digits as its factorization.

1143232249 is an evil number, because the sum of its binary digits is even.

The product of its digits is 10368, while the sum is 31.

The square root of 1143232249 is about 33811.7176286565. The cubic root of 1143232249 is about 1045.6302903081.

It can be divided in two parts, 11432 and 32249, that added together give a square (43681 = 209²).

The spelling of 1143232249 in words is "one billion, one hundred forty-three million, two hundred thirty-two thousand, two hundred forty-nine".