1143253345 has 16 divisors (see below), whose sum is σ = 1480070592. Its totient is φ = 842742720.

The previous prime is 1143253273. The next prime is 1143253369. The reversal of 1143253345 is 5433523411.

It is not a de Polignac number, because 1143253345 - 2¹⁷ = 1143122273 is a prime.

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 15 ways as a sum of consecutive naturals, for example, 21714 + ... + 52516.

It is an arithmetic number, because the mean of its divisors is an integer number (92504412).

Almost surely, 2^1143253345 is an apocalyptic number.

It is an amenable number.

1143253345 is a deficient number, since it is larger than the sum of its proper divisors (336817247).

1143253345 is a wasteful number, since it uses less digits than its factorization.

1143253345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31392.

The product of its digits is 21600, while the sum is 31.

The square root of 1143253345 is about 33812.0295900734. The cubic root of 1143253345 is about 1045.6367219207.

Adding to 1143253345 its reverse (5433523411), we get a palindrome (6576776756).

The spelling of 1143253345 in words is "one billion, one hundred forty-three million, two hundred fifty-three thousand, three hundred forty-five".