1144671889 has 9 divisors (see below), whose sum is σ = 1197418089. Its totient is φ = 1094159220.

The previous prime is 1144671883. The next prime is 1144671937. The reversal of 1144671889 is 9881764411.

It is a happy number.

The square root of 1144671889 is 33833.

It is a perfect power (a square), and thus also a powerful number.

It is not a de Polignac number, because 1144671889 - 2¹³ = 1144663697 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1144671883) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 777424 + ... + 778894.

Almost surely, 2^1144671889 is an apocalyptic number.

1144671889 is the 33833-rd square number.

1144671889 is the 16917-th centered octagonal number.

It is an amenable number.

1144671889 is a deficient number, since it is larger than the sum of its proper divisors (52746200).

1144671889 is an frugal number, since it uses more digits than its factorization.

1144671889 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2988 (or 1494 counting only the distinct ones).

The product of its digits is 387072, while the sum is 49.

The cubic root of 1144671889 is about 1046.0690170732.

Multiplying 1144671889 by its sum of digits (49), we get a square (56088922561 = 236831²).

The spelling of 1144671889 in words is "one billion, one hundred forty-four million, six hundred seventy-one thousand, eight hundred eighty-nine".