1154844289 has 9 divisors (see below), whose sum is σ = 1227386307. Its totient is φ = 1086368544.

The previous prime is 1154844269. The next prime is 1154844319. The reversal of 1154844289 is 9824484511.

The square root of 1154844289 is 33983.

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

It can be written as a sum of positive squares in only one way, i.e., 899100225 + 255744064 = 29985^2 + 15992^2 .

It is not a de Polignac number, because 1154844289 - 2⁷ = 1154844161 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1154844269) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 576712 + ... + 578710.

Almost surely, 2^1154844289 is an apocalyptic number.

1154844289 is the 33983-rd square number.

1154844289 is the 16992-nd centered octagonal number.

It is an amenable number.

1154844289 is a deficient number, since it is larger than the sum of its proper divisors (72542018).

1154844289 is an frugal number, since it uses more digits than its factorization.

1154844289 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4032 (or 2016 counting only the distinct ones).

The product of its digits is 368640, while the sum is 46.

The cubic root of 1154844289 is about 1049.1585969840.

The spelling of 1154844289 in words is "one billion, one hundred fifty-four million, eight hundred forty-four thousand, two hundred eighty-nine".