1143557475 has 24 divisors (see below), whose sum is σ = 1891776240. Its totient is φ = 609544320.

The previous prime is 1143557449. The next prime is 1143557497. The reversal of 1143557475 is 5747553411.

It is not a de Polignac number, because 1143557475 - 2¹² = 1143553379 is a prime.

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 23 ways as a sum of consecutive naturals, for example, 173541 + ... + 180009.

It is an arithmetic number, because the mean of its divisors is an integer number (78824010).

Almost surely, 2^1143557475 is an apocalyptic number.

1143557475 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1143557475 is a deficient number, since it is larger than the sum of its proper divisors (748218765).

1143557475 is a wasteful number, since it uses less digits than its factorization.

1143557475 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8839 (or 8834 counting only the distinct ones).

The product of its digits is 294000, while the sum is 42.

The square root of 1143557475 is about 33816.5266548769. The cubic root of 1143557475 is about 1045.7294343257.

The spelling of 1143557475 in words is "one billion, one hundred forty-three million, five hundred fifty-seven thousand, four hundred seventy-five".