1156611116 has 24 divisors (see below), whose sum is σ = 2212269696. Its totient is φ = 526728960.

The previous prime is 1156611067. The next prime is 1156611163. The reversal of 1156611116 is 6111166511.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 272231 + ... + 276446.

It is an arithmetic number, because the mean of its divisors is an integer number (92177904).

Almost surely, 2^1156611116 is an apocalyptic number.

It is an amenable number.

1156611116 is a deficient number, since it is larger than the sum of its proper divisors (1055658580).

1156611116 is a wasteful number, since it uses less digits than its factorization.

1156611116 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 548729 (or 548727 counting only the distinct ones).

The product of its digits is 1080, while the sum is 29.

The square root of 1156611116 is about 34008.9858125761. The cubic root of 1156611116 is about 1049.6933695718.

Adding to 1156611116 its reverse (6111166511), we get a palindrome (7267777627).

The spelling of 1156611116 in words is "one billion, one hundred fifty-six million, six hundred eleven thousand, one hundred sixteen".