1189440068 has 6 divisors (see below), whose sum is σ = 2081520126. Its totient is φ = 594720032.

The previous prime is 1189440061. The next prime is 1189440089. The reversal of 1189440068 is 8600449811.

It can be written as a sum of positive squares in only one way, i.e., 609497344 + 579942724 = 24688^2 + 24082^2 .

It is not an unprimeable number, because it can be changed into a prime (1189440061) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 148680005 + ... + 148680012.

It is an arithmetic number, because the mean of its divisors is an integer number (346920021).

Almost surely, 2^1189440068 is an apocalyptic number.

It is an amenable number.

1189440068 is a deficient number, since it is larger than the sum of its proper divisors (892080058).

1189440068 is a wasteful number, since it uses less digits than its factorization.

1189440068 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 297360021 (or 297360019 counting only the distinct ones).

The product of its (nonzero) digits is 55296, while the sum is 41.

The square root of 1189440068 is about 34488.2598575225. The cubic root of 1189440068 is about 1059.5322690182.

Adding to 1189440068 its reverse (8600449811), we get a palindrome (9789889879).

The spelling of 1189440068 in words is "one billion, one hundred eighty-nine million, four hundred forty thousand, sixty-eight".