1144537869 has 16 divisors (see below), whose sum is σ = 1616507712. Its totient is φ = 717835008.

The previous prime is 1144537861. The next prime is 1144537897. The reversal of 1144537869 is 9687354411.

It is not a de Polignac number, because 1144537869 - 2³ = 1144537861 is a prime.

It is a super-2 number, since 2×1144537869² = 2619933867150122322, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1144537861) 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 15 ways as a sum of consecutive naturals, for example, 206002 + ... + 211484.

It is an arithmetic number, because the mean of its divisors is an integer number (101031732).

Almost surely, 2^1144537869 is an apocalyptic number.

It is an amenable number.

1144537869 is a deficient number, since it is larger than the sum of its proper divisors (471969843).

1144537869 is a wasteful number, since it uses less digits than its factorization.

1144537869 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9596.

The product of its digits is 725760, while the sum is 48.

The square root of 1144537869 is about 33831.0193313769. The cubic root of 1144537869 is about 1046.0281903400.

The spelling of 1144537869 in words is "one billion, one hundred forty-four million, five hundred thirty-seven thousand, eight hundred sixty-nine".