1166641215 has 8 divisors (see below), whose sum is σ = 1866625968. Its totient is φ = 622208640.

The previous prime is 1166641207. The next prime is 1166641237. The reversal of 1166641215 is 5121466611.

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

It is not a de Polignac number, because 1166641215 - 2³ = 1166641207 is a prime.

It is a super-2 number, since 2×1166641215² = 2722103449073352450, which contains 22 as substring.

It is a congruent 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, 38888026 + ... + 38888055.

It is an arithmetic number, because the mean of its divisors is an integer number (233328246).

Almost surely, 2^1166641215 is an apocalyptic number.

1166641215 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1166641215 is a deficient number, since it is larger than the sum of its proper divisors (699984753).

1166641215 is an equidigital number, since it uses as much as digits as its factorization.

1166641215 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77776089.

The product of its digits is 8640, while the sum is 33.

The square root of 1166641215 is about 34156.1299769163. The cubic root of 1166641215 is about 1052.7189442262.

The spelling of 1166641215 in words is "one billion, one hundred sixty-six million, six hundred forty-one thousand, two hundred fifteen".