1143347538 has 16 divisors (see below), whose sum is σ = 2301840576. Its totient is φ = 378591600.

The previous prime is 1143347509. The next prime is 1143347567. The reversal of 1143347538 is 8357433411.

It is an interprime number because it is at equal distance from previous prime (1143347509) and next prime (1143347567).

It is a super-2 number, since 2×1143347538² = 2614487185301322888, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1143347496 and 1143347505.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 630081 + ... + 631892.

It is an arithmetic number, because the mean of its divisors is an integer number (143865036).

Almost surely, 2^1143347538 is an apocalyptic number.

1143347538 is an abundant number, since it is smaller than the sum of its proper divisors (1158493038).

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

1143347538 is a wasteful number, since it uses less digits than its factorization.

1143347538 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1262129.

The product of its digits is 120960, while the sum is 39.

The square root of 1143347538 is about 33813.4224532211. The cubic root of 1143347538 is about 1045.6654379108.

The spelling of 1143347538 in words is "one billion, one hundred forty-three million, three hundred forty-seven thousand, five hundred thirty-eight".