1143153665 has 16 divisors (see below), whose sum is σ = 1429902912. Its totient is φ = 876515904.

The previous prime is 1143153643. The next prime is 1143153673. The reversal of 1143153665 is 5663513411.

It is a cyclic number.

It is not a de Polignac number, because 1143153665 - 2²⁸ = 874718209 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 33719 + ... + 58508.

It is an arithmetic number, because the mean of its divisors is an integer number (89368932).

Almost surely, 2^1143153665 is an apocalyptic number.

It is an amenable number.

1143153665 is a deficient number, since it is larger than the sum of its proper divisors (286749247).

1143153665 is an equidigital number, since it uses as much as digits as its factorization.

1143153665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 92336.

The product of its digits is 32400, while the sum is 35.

The square root of 1143153665 is about 33810.5555263441. Note that the first 4 decimals coincide. The cubic root of 1143153665 is about 1045.6063314279.

The spelling of 1143153665 in words is "one billion, one hundred forty-three million, one hundred fifty-three thousand, six hundred sixty-five".