1143880263 has 36 divisors (see below), whose sum is σ = 1733777760. Its totient is φ = 726590592.

The previous prime is 1143880249. The next prime is 1143880273. The reversal of 1143880263 is 3620883411.

1143880263 is a `hidden beast` number, since 1 + 14 + 388 + 0 + 263 = 666.

It is not a de Polignac number, because 1143880263 - 2⁸ = 1143880007 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1143880273) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 596995 + ... + 598907.

Almost surely, 2^1143880263 is an apocalyptic number.

1143880263 is a deficient number, since it is larger than the sum of its proper divisors (589897497).

1143880263 is a wasteful number, since it uses less digits than its factorization.

1143880263 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2056 (or 2024 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 36.

The square root of 1143880263 is about 33821.2989549485. The cubic root of 1143880263 is about 1045.8278165424.

The spelling of 1143880263 in words is "one billion, one hundred forty-three million, eight hundred eighty thousand, two hundred sixty-three".