1143233149 has 2 divisors, whose sum is σ = 1143233150. Its totient is φ = 1143233148.

The previous prime is 1143233137. The next prime is 1143233171. The reversal of 1143233149 is 9413323411.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1122920100 + 20313049 = 33510^2 + 4507^2 .

It is a cyclic number.

It is not a de Polignac number, because 1143233149 - 2¹⁵ = 1143200381 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1143233149.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1143233549) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 571616574 + 571616575.

It is an arithmetic number, because the mean of its divisors is an integer number (571616575).

Almost surely, 2^1143233149 is an apocalyptic number.

It is an amenable number.

1143233149 is a deficient number, since it is larger than the sum of its proper divisors (1).

1143233149 is an equidigital number, since it uses as much as digits as its factorization.

1143233149 is an evil number, because the sum of its binary digits is even.

The product of its digits is 7776, while the sum is 31.

The square root of 1143233149 is about 33811.7309376494. The cubic root of 1143233149 is about 1045.6305646959.

The spelling of 1143233149 in words is "one billion, one hundred forty-three million, two hundred thirty-three thousand, one hundred forty-nine".