1143246357 has 54 divisors (see below), whose sum is σ = 1849673826. Its totient is φ = 679916160.

The previous prime is 1143246343. The next prime is 1143246361. The reversal of 1143246357 is 7536423411.

1143246357 is a `hidden beast` number, since 1 + 14 + 3 + 2 + 4 + 635 + 7 = 666.

It can be written as a sum of positive squares in 3 ways, for example, as 567678276 + 575568081 = 23826^2 + 23991^2 .

It is not a de Polignac number, because 1143246357 - 2²⁰ = 1142197781 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1143246457) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 53 ways as a sum of consecutive naturals, for example, 5803183 + ... + 5803379.

It is an arithmetic number, because the mean of its divisors is an integer number (34253219).

Almost surely, 2^1143246357 is an apocalyptic number.

It is an amenable number.

1143246357 is a deficient number, since it is larger than the sum of its proper divisors (706427469).

1143246357 is a wasteful number, since it uses less digits than its factorization.

1143246357 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 371 (or 284 counting only the distinct ones).

The product of its digits is 60480, while the sum is 36.

The square root of 1143246357 is about 33811.9262539122. The cubic root of 1143246357 is about 1045.6345914731.

Adding to 1143246357 its reverse (7536423411), we get a palindrome (8679669768).

The spelling of 1143246357 in words is "one billion, one hundred forty-three million, two hundred forty-six thousand, three hundred fifty-seven".