1153440268 has 12 divisors (see below), whose sum is σ = 2036384280. Its totient is φ = 571616192.

The previous prime is 1153440241. The next prime is 1153440269. The reversal of 1153440268 is 8620443511.

It is not an unprimeable number, because it can be changed into a prime (1153440269) 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, 1275478 + ... + 1276381.

It is an arithmetic number, because the mean of its divisors is an integer number (169698690).

Almost surely, 2^1153440268 is an apocalyptic number.

It is an amenable number.

1153440268 is a deficient number, since it is larger than the sum of its proper divisors (882944012).

1153440268 is a wasteful number, since it uses less digits than its factorization.

1153440268 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2551976 (or 2551974 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 34.

The square root of 1153440268 is about 33962.3360209512. The cubic root of 1153440268 is about 1048.7332472701.

Adding to 1153440268 its reverse (8620443511), we get a palindrome (9773883779).

The spelling of 1153440268 in words is "one billion, one hundred fifty-three million, four hundred forty thousand, two hundred sixty-eight".