1166155117 has 16 divisors (see below), whose sum is σ = 1249634304. Its totient is φ = 1086336000.

The previous prime is 1166155091. The next prime is 1166155121. The reversal of 1166155117 is 7115516611.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 1166155117 - 2¹¹ = 1166153069 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1166155127) 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, 82317 + ... + 95437.

It is an arithmetic number, because the mean of its divisors is an integer number (78102144).

Almost surely, 2^1166155117 is an apocalyptic number.

It is an amenable number.

1166155117 is a deficient number, since it is larger than the sum of its proper divisors (83479187).

1166155117 is a wasteful number, since it uses less digits than its factorization.

1166155117 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13260.

The product of its digits is 6300, while the sum is 34.

The square root of 1166155117 is about 34149.0134118103. The cubic root of 1166155117 is about 1052.5727137039.

The spelling of 1166155117 in words is "one billion, one hundred sixty-six million, one hundred fifty-five thousand, one hundred seventeen".