1143497149 has 2 divisors, whose sum is σ = 1143497150. Its totient is φ = 1143497148.

The previous prime is 1143497087. The next prime is 1143497161. The reversal of 1143497149 is 9417943411.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 858900249 + 284596900 = 29307^2 + 16870^2 .

It is a cyclic number.

It is not a de Polignac number, because 1143497149 - 2⁷ = 1143497021 is a prime.

It is a super-2 number, since 2×1143497149² = 2615171459542256402, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1143497549) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 571748574 + 571748575.

It is an arithmetic number, because the mean of its divisors is an integer number (571748575).

Almost surely, 2^1143497149 is an apocalyptic number.

It is an amenable number.

1143497149 is a deficient number, since it is larger than the sum of its proper divisors (1).

1143497149 is an equidigital number, since it uses as much as digits as its factorization.

1143497149 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 108864, while the sum is 43.

The square root of 1143497149 is about 33815.6346827913. The cubic root of 1143497149 is about 1045.7110455740.

The spelling of 1143497149 in words is "one billion, one hundred forty-three million, four hundred ninety-seven thousand, one hundred forty-nine".