1143381463 has 24 divisors (see below), whose sum is σ = 1397031840. Its totient is φ = 915566400.

The previous prime is 1143381431. The next prime is 1143381479. The reversal of 1143381463 is 3641833411.

It is not a de Polignac number, because 1143381463 - 2⁵ = 1143381431 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1143381403) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 192153 + ... + 198013.

It is an arithmetic number, because the mean of its divisors is an integer number (58209660).

Almost surely, 2^1143381463 is an apocalyptic number.

1143381463 is a deficient number, since it is larger than the sum of its proper divisors (253650377).

1143381463 is an equidigital number, since it uses as much as digits as its factorization.

1143381463 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5959 (or 5928 counting only the distinct ones).

The product of its digits is 20736, while the sum is 34.

The square root of 1143381463 is about 33813.9240994002. The cubic root of 1143381463 is about 1045.6757800123.

The spelling of 1143381463 in words is "one billion, one hundred forty-three million, three hundred eighty-one thousand, four hundred sixty-three".