1156171116 has 48 divisors (see below), whose sum is σ = 2776852736. Its totient is φ = 374134464.

The previous prime is 1156171111. The next prime is 1156171117. The reversal of 1156171116 is 6111716511.

It is not an unprimeable number, because it can be changed into a prime (1156171111) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 213555 + ... + 218901.

Almost surely, 2^1156171116 is an apocalyptic number.

It is an amenable number.

1156171116 is an abundant number, since it is smaller than the sum of its proper divisors (1620681620).

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

1156171116 is a wasteful number, since it uses less digits than its factorization.

1156171116 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5878 (or 5876 counting only the distinct ones).

The product of its digits is 1260, while the sum is 30.

The square root of 1156171116 is about 34002.5163186491. The cubic root of 1156171116 is about 1049.5602439671.

Adding to 1156171116 its reverse (6111716511), we get a palindrome (7267887627).

The spelling of 1156171116 in words is "one billion, one hundred fifty-six million, one hundred seventy-one thousand, one hundred sixteen".