1144642205 has 12 divisors (see below), whose sum is σ = 1597827420. Its totient is φ = 784897344.

The previous prime is 1144642199. The next prime is 1144642207. The reversal of 1144642205 is 5022464411.

It can be written as a sum of positive squares in 2 ways, for example, as 458516569 + 686125636 = 21413^2 + 26194^2 .

It is not a de Polignac number, because 1144642205 - 2²² = 1140447901 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1144642207) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2335760 + ... + 2336249.

It is an arithmetic number, because the mean of its divisors is an integer number (133152285).

Almost surely, 2^1144642205 is an apocalyptic number.

It is an amenable number.

1144642205 is a deficient number, since it is larger than the sum of its proper divisors (453185215).

1144642205 is an equidigital number, since it uses as much as digits as its factorization.

1144642205 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4672028 (or 4672021 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 29.

The square root of 1144642205 is about 33832.5613130310. The cubic root of 1144642205 is about 1046.0599746622.

The spelling of 1144642205 in words is "one billion, one hundred forty-four million, six hundred forty-two thousand, two hundred five".