2166306529 has 8 divisors (see below), whose sum is σ = 2200117248. Its totient is φ = 2132730240.

The previous prime is 2166306523. The next prime is 2166306533. The reversal of 2166306529 is 9256036612.

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 2166306529 - 2¹⁵ = 2166273761 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2166306491 and 2166306500.

It is not an unprimeable number, because it can be changed into a prime (2166306523) 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, 39937 + ... + 76990.

It is an arithmetic number, because the mean of its divisors is an integer number (275014656).

Almost surely, 2^2166306529 is an apocalyptic number.

It is an amenable number.

2166306529 is a deficient number, since it is larger than the sum of its proper divisors (33810719).

2166306529 is a wasteful number, since it uses less digits than its factorization.

2166306529 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 117215.

The product of its (nonzero) digits is 116640, while the sum is 40.

The square root of 2166306529 is about 46543.5981526998. The cubic root of 2166306529 is about 1293.9176476284.

The spelling of 2166306529 in words is "two billion, one hundred sixty-six million, three hundred six thousand, five hundred twenty-nine".