1143505144 has 16 divisors (see below), whose sum is σ = 2144784600. Its totient is φ = 571562592.

The previous prime is 1143505087. The next prime is 1143505151. The reversal of 1143505144 is 4415053411.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3699 + ... + 47965.

Almost surely, 2^1143505144 is an apocalyptic number.

It is an amenable number.

1143505144 is a deficient number, since it is larger than the sum of its proper divisors (1001279456).

1143505144 is a wasteful number, since it uses less digits than its factorization.

1143505144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47502 (or 47498 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 28.

The square root of 1143505144 is about 33815.7528971336. The cubic root of 1143505144 is about 1045.7134826710.

Adding to 1143505144 its reverse (4415053411), we get a palindrome (5558558555).

The spelling of 1143505144 in words is "one billion, one hundred forty-three million, five hundred five thousand, one hundred forty-four".