1144582811 has 8 divisors (see below), whose sum is σ = 1148029200. Its totient is φ = 1141143040.

The previous prime is 1144582807. The next prime is 1144582823. The reversal of 1144582811 is 1182854411.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1144582811 - 2² = 1144582807 is a prime.

It is a super-2 number, since 2×1144582811² = 2620139622473323442, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1144581811) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 706160 + ... + 707778.

It is an arithmetic number, because the mean of its divisors is an integer number (143503650).

Almost surely, 2^1144582811 is an apocalyptic number.

1144582811 is a deficient number, since it is larger than the sum of its proper divisors (3446389).

1144582811 is an equidigital number, since it uses as much as digits as its factorization.

1144582811 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3309.

The product of its digits is 10240, while the sum is 35.

The square root of 1144582811 is about 33831.6835377727. The cubic root of 1144582811 is about 1046.0418814506.

The spelling of 1144582811 in words is "one billion, one hundred forty-four million, five hundred eighty-two thousand, eight hundred eleven".