1144216263 has 16 divisors (see below), whose sum is σ = 1616721120. Its totient is φ = 717336576.

The previous prime is 1144216253. The next prime is 1144216267. The reversal of 1144216263 is 3626124411.

It is not a de Polignac number, because 1144216263 - 2⁴ = 1144216247 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1144216263.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1144216267) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 56343 + ... + 73911.

It is an arithmetic number, because the mean of its divisors is an integer number (101045070).

Almost surely, 2^1144216263 is an apocalyptic number.

1144216263 is a deficient number, since it is larger than the sum of its proper divisors (472504857).

1144216263 is a wasteful number, since it uses less digits than its factorization.

1144216263 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18866.

The product of its digits is 6912, while the sum is 30.

The square root of 1144216263 is about 33826.2658743173. The cubic root of 1144216263 is about 1045.9302059728.

The spelling of 1144216263 in words is "one billion, one hundred forty-four million, two hundred sixteen thousand, two hundred sixty-three".