1143812530 has 32 divisors (see below), whose sum is σ = 2491399296. Its totient is φ = 369095424.

The previous prime is 1143812507. The next prime is 1143812567. The reversal of 1143812530 is 352183411.

It is a happy number.

It is an unprimeable number.

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 in 15 ways as a sum of consecutive naturals, for example, 479404 + ... + 481783.

It is an arithmetic number, because the mean of its divisors is an integer number (77856228).

Almost surely, 2^1143812530 is an apocalyptic number.

1143812530 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1143812530 is an abundant number, since it is smaller than the sum of its proper divisors (1347586766).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1143812530 is a wasteful number, since it uses less digits than its factorization.

1143812530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 961218.

The product of its (nonzero) digits is 2880, while the sum is 28.

The square root of 1143812530 is about 33820.2976036581. The cubic root of 1143812530 is about 1045.8071738068.

Adding to 1143812530 its reverse (352183411), we get a palindrome (1495995941).

The spelling of 1143812530 in words is "one billion, one hundred forty-three million, eight hundred twelve thousand, five hundred thirty".