1144689213 has 8 divisors (see below), whose sum is σ = 1526475808. Its totient is φ = 763014384.

The previous prime is 1144689211. The next prime is 1144689251. The reversal of 1144689213 is 3129864411.

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

It is not a de Polignac number, because 1144689213 - 2¹ = 1144689211 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1144689211) 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, 70 + ... + 47847.

It is an arithmetic number, because the mean of its divisors is an integer number (190809476).

Almost surely, 2^1144689213 is an apocalyptic number.

It is an amenable number.

1144689213 is a deficient number, since it is larger than the sum of its proper divisors (381786595).

1144689213 is an equidigital number, since it uses as much as digits as its factorization.

1144689213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55883.

The product of its digits is 41472, while the sum is 39.

The square root of 1144689213 is about 33833.2560212581. The cubic root of 1144689213 is about 1046.0742942793.

The spelling of 1144689213 in words is "one billion, one hundred forty-four million, six hundred eighty-nine thousand, two hundred thirteen".