1157111368 has 32 divisors (see below), whose sum is σ = 2565028800. Its totient is φ = 478804032.

The previous prime is 1157111359. The next prime is 1157111387. The reversal of 1157111368 is 8631117511.

It is a happy number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 354630 + ... + 357877.

It is an arithmetic number, because the mean of its divisors is an integer number (80157150).

Almost surely, 2^1157111368 is an apocalyptic number.

It is an amenable number.

1157111368 is an abundant number, since it is smaller than the sum of its proper divisors (1407917432).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1157111368 is a wasteful number, since it uses less digits than its factorization.

1157111368 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 712549 (or 712545 counting only the distinct ones).

The product of its digits is 5040, while the sum is 34.

The square root of 1157111368 is about 34016.3397207871. The cubic root of 1157111368 is about 1049.8446839051.

Adding to 1157111368 its reverse (8631117511), we get a palindrome (9788228879).

The spelling of 1157111368 in words is "one billion, one hundred fifty-seven million, one hundred eleven thousand, three hundred sixty-eight".