1166255015 has 4 divisors (see below), whose sum is σ = 1399506024. Its totient is φ = 933004008.

The previous prime is 1166255011. The next prime is 1166255023. The reversal of 1166255015 is 5105526611.

1166255015 is digitally balanced in base 6, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5105526611 = 43 ⋅118733177.

It is a cyclic number.

It is not a de Polignac number, because 1166255015 - 2² = 1166255011 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1166255011) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 116625497 + ... + 116625506.

It is an arithmetic number, because the mean of its divisors is an integer number (349876506).

Almost surely, 2^1166255015 is an apocalyptic number.

1166255015 is a deficient number, since it is larger than the sum of its proper divisors (233251009).

1166255015 is an equidigital number, since it uses as much as digits as its factorization.

1166255015 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 233251008.

The product of its (nonzero) digits is 9000, while the sum is 32.

The square root of 1166255015 is about 34150.4760581752. The cubic root of 1166255015 is about 1052.6027688556.

The spelling of 1166255015 in words is "one billion, one hundred sixty-six million, two hundred fifty-five thousand, fifteen".