1144516261 has 4 divisors (see below), whose sum is σ = 1308018592. Its totient is φ = 981013932.

The previous prime is 1144516259. The next prime is 1144516267. The reversal of 1144516261 is 1626154411.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1144516261 - 2¹ = 1144516259 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1144516267) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 81751155 + ... + 81751168.

It is an arithmetic number, because the mean of its divisors is an integer number (327004648).

Almost surely, 2^1144516261 is an apocalyptic number.

It is an amenable number.

1144516261 is a deficient number, since it is larger than the sum of its proper divisors (163502331).

1144516261 is an equidigital number, since it uses as much as digits as its factorization.

1144516261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 163502330.

The product of its digits is 5760, while the sum is 31.

The square root of 1144516261 is about 33830.6999779786. The cubic root of 1144516261 is about 1046.0216075611.

The spelling of 1144516261 in words is "one billion, one hundred forty-four million, five hundred sixteen thousand, two hundred sixty-one".