1144389111 has 4 divisors (see below), whose sum is σ = 1525852152. Its totient is φ = 762926072.

The previous prime is 1144389109. The next prime is 1144389131. The reversal of 1144389111 is 1119834411.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1119834411 = 3 ⋅373278137.

It is a cyclic number.

It is not a de Polignac number, because 1144389111 - 2¹ = 1144389109 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1144389131) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 190731516 + ... + 190731521.

It is an arithmetic number, because the mean of its divisors is an integer number (381463038).

Almost surely, 2^1144389111 is an apocalyptic number.

1144389111 is a deficient number, since it is larger than the sum of its proper divisors (381463041).

1144389111 is an equidigital number, since it uses as much as digits as its factorization.

1144389111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 381463040.

The product of its digits is 3456, while the sum is 33.

The square root of 1144389111 is about 33828.8207154787. The cubic root of 1144389111 is about 1045.9828702134.

The spelling of 1144389111 in words is "one billion, one hundred forty-four million, three hundred eighty-nine thousand, one hundred eleven".