1144332513 has 24 divisors (see below), whose sum is σ = 1744610400. Its totient is φ = 720788544.

The previous prime is 1144332443. The next prime is 1144332517. The reversal of 1144332513 is 3152334411.

It is a happy number.

1144332513 is a `hidden beast` number, since 1 + 144 + 3 + 3 + 2 + 513 = 666.

It is not a de Polignac number, because 1144332513 - 2¹² = 1144328417 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1144332517) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 55981 + ... + 73637.

It is an arithmetic number, because the mean of its divisors is an integer number (72692100).

Almost surely, 2^1144332513 is an apocalyptic number.

It is an amenable number.

1144332513 is a deficient number, since it is larger than the sum of its proper divisors (600277887).

1144332513 is a wasteful number, since it uses less digits than its factorization.

1144332513 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18061 (or 18058 counting only the distinct ones).

The product of its digits is 4320, while the sum is 27.

The square root of 1144332513 is about 33827.9841699147. The cubic root of 1144332513 is about 1045.9656262201.

Adding to 1144332513 its reverse (3152334411), we get a palindrome (4296666924).

It can be divided in two parts, 11443 and 32513, that added together give a triangular number (43956 = T₂₉₆).

The spelling of 1144332513 in words is "one billion, one hundred forty-four million, three hundred thirty-two thousand, five hundred thirteen".