1144889149 has 8 divisors (see below), whose sum is σ = 1162425152. Its totient is φ = 1127403360.

The previous prime is 1144889111. The next prime is 1144889167. The reversal of 1144889149 is 9419884411.

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 1144889149 - 2¹⁹ = 1144364861 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 (1144889189) 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, 34744 + ... + 59134.

It is an arithmetic number, because the mean of its divisors is an integer number (145303144).

Almost surely, 2^1144889149 is an apocalyptic number.

It is an amenable number.

1144889149 is a deficient number, since it is larger than the sum of its proper divisors (17536003).

1144889149 is an equidigital number, since it uses as much as digits as its factorization.

1144889149 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25107.

The product of its digits is 331776, while the sum is 49.

The square root of 1144889149 is about 33836.2106182120. The cubic root of 1144889149 is about 1046.1351945749.

The spelling of 1144889149 in words is "one billion, one hundred forty-four million, eight hundred eighty-nine thousand, one hundred forty-nine".