1144137687 has 64 divisors (see below), whose sum is σ = 2030039040. Its totient is φ = 555206400.

The previous prime is 1144137647. The next prime is 1144137719. The reversal of 1144137687 is 7867314411.

It is not a de Polignac number, because 1144137687 - 2¹² = 1144133591 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1144137607) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 318612 + ... + 322182.

It is an arithmetic number, because the mean of its divisors is an integer number (31719360).

Almost surely, 2^1144137687 is an apocalyptic number.

1144137687 is a deficient number, since it is larger than the sum of its proper divisors (885901353).

1144137687 is a wasteful number, since it uses less digits than its factorization.

1144137687 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3684.

The product of its digits is 112896, while the sum is 42.

The square root of 1144137687 is about 33825.1043900828. The cubic root of 1144137687 is about 1045.9062632690.

It can be divided in two parts, 1144 and 137687, that added together give a palindrome (138831).

The spelling of 1144137687 in words is "one billion, one hundred forty-four million, one hundred thirty-seven thousand, six hundred eighty-seven".