2166130545 has 8 divisors (see below), whose sum is σ = 3465808896. Its totient is φ = 1155269616.

The previous prime is 2166130507. The next prime is 2166130583. The reversal of 2166130545 is 5450316612.

It is an interprime number because it is at equal distance from previous prime (2166130507) and next prime (2166130583).

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

It is not a de Polignac number, because 2166130545 - 2¹⁰ = 2166129521 is a prime.

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 72204337 + ... + 72204366.

It is an arithmetic number, because the mean of its divisors is an integer number (433226112).

Almost surely, 2^2166130545 is an apocalyptic number.

It is an amenable number.

2166130545 is a deficient number, since it is larger than the sum of its proper divisors (1299678351).

2166130545 is a wasteful number, since it uses less digits than its factorization.

2166130545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 144408711.

The product of its (nonzero) digits is 21600, while the sum is 33.

The square root of 2166130545 is about 46541.7075857773. The cubic root of 2166130545 is about 1293.8826087321.

The spelling of 2166130545 in words is "two billion, one hundred sixty-six million, one hundred thirty thousand, five hundred forty-five".