1166505151 has 8 divisors (see below), whose sum is σ = 1333592064. Its totient is φ = 999529080.

The previous prime is 1166505149. The next prime is 1166505163. The reversal of 1166505151 is 1515056611.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1166505151 - 2¹ = 1166505149 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1166505451) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3775 + ... + 48448.

It is an arithmetic number, because the mean of its divisors is an integer number (166699008).

Almost surely, 2^1166505151 is an apocalyptic number.

1166505151 is a deficient number, since it is larger than the sum of its proper divisors (167086913).

1166505151 is an equidigital number, since it uses as much as digits as its factorization.

1166505151 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55421.

The product of its (nonzero) digits is 4500, while the sum is 31.

The square root of 1166505151 is about 34154.1381240985. The cubic root of 1166505151 is about 1052.6780168421.

It can be divided in two parts, 116650 and 5151, that added together give a square (121801 = 349²).

The spelling of 1166505151 in words is "one billion, one hundred sixty-six million, five hundred five thousand, one hundred fifty-one".