1143115530 has 64 divisors (see below), whose sum is σ = 2908742400. Its totient is φ = 286516224.

The previous prime is 1143115511. The next prime is 1143115537. The reversal of 1143115530 is 355113411.

It is a super-2 number, since 2×1143115530² = 2613426229854361800, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1143115530.

It is not an unprimeable number, because it can be changed into a prime (1143115537) 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 31 ways as a sum of consecutive naturals, for example, 737196 + ... + 738744.

It is an arithmetic number, because the mean of its divisors is an integer number (45449100).

Almost surely, 2^1143115530 is an apocalyptic number.

1143115530 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1143115530 is an abundant number, since it is smaller than the sum of its proper divisors (1765626870).

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

1143115530 is a wasteful number, since it uses less digits than its factorization.

1143115530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3023.

The product of its (nonzero) digits is 900, while the sum is 24.

The square root of 1143115530 is about 33809.9915705402. The cubic root of 1143115530 is about 1045.5947043410.

Adding to 1143115530 its reverse (355113411), we get a palindrome (1498228941).

The spelling of 1143115530 in words is "one billion, one hundred forty-three million, one hundred fifteen thousand, five hundred thirty".