1144023541 has 4 divisors (see below), whose sum is σ = 1144212300. Its totient is φ = 1143834784.

The previous prime is 1144023539. The next prime is 1144023607. The reversal of 1144023541 is 1453204411.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 142301041 + 1001722500 = 11929^2 + 31650^2 .

It is a cyclic number.

It is not a de Polignac number, because 1144023541 - 2¹ = 1144023539 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 (1144023521) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 84976 + ... + 97513.

It is an arithmetic number, because the mean of its divisors is an integer number (286053075).

Almost surely, 2^1144023541 is an apocalyptic number.

It is an amenable number.

1144023541 is a deficient number, since it is larger than the sum of its proper divisors (188759).

1144023541 is an equidigital number, since it uses as much as digits as its factorization.

1144023541 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 188758.

The product of its (nonzero) digits is 1920, while the sum is 25.

The square root of 1144023541 is about 33823.4170509131. The cubic root of 1144023541 is about 1045.8714801632.

Adding to 1144023541 its reverse (1453204411), we get a palindrome (2597227952).

The spelling of 1144023541 in words is "one billion, one hundred forty-four million, twenty-three thousand, five hundred forty-one".