1144540373 has 16 divisors (see below), whose sum is σ = 1222758720. Its totient is φ = 1068235776.

The previous prime is 1144540349. The next prime is 1144540391. The reversal of 1144540373 is 3730454411.

It is a cyclic number.

It is not a de Polignac number, because 1144540373 - 2¹⁸ = 1144278229 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 (1144540343) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 390911 + ... + 393827.

It is an arithmetic number, because the mean of its divisors is an integer number (76422420).

Almost surely, 2^1144540373 is an apocalyptic number.

It is an amenable number.

1144540373 is a deficient number, since it is larger than the sum of its proper divisors (78218347).

1144540373 is a wasteful number, since it uses less digits than its factorization.

1144540373 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3236.

The product of its (nonzero) digits is 20160, while the sum is 32.

The square root of 1144540373 is about 33831.0563388139. The cubic root of 1144540373 is about 1046.0289531669.

Adding to 1144540373 its reverse (3730454411), we get a palindrome (4874994784).

The spelling of 1144540373 in words is "one billion, one hundred forty-four million, five hundred forty thousand, three hundred seventy-three".