2166339813 has 16 divisors (see below), whose sum is σ = 3162187776. Its totient is φ = 1308288240.

The previous prime is 2166339811. The next prime is 2166339821. The reversal of 2166339813 is 3189336612.

2166339813 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 2166339813 - 2¹ = 2166339811 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2166339811) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 106645 + ... + 125322.

It is an arithmetic number, because the mean of its divisors is an integer number (197636736).

Almost surely, 2^2166339813 is an apocalyptic number.

It is an amenable number.

2166339813 is a deficient number, since it is larger than the sum of its proper divisors (995847963).

2166339813 is a wasteful number, since it uses less digits than its factorization.

2166339813 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 232264.

The product of its digits is 139968, while the sum is 42.

The square root of 2166339813 is about 46543.9557085558. The cubic root of 2166339813 is about 1293.9242743506.

The spelling of 2166339813 in words is "two billion, one hundred sixty-six million, three hundred thirty-nine thousand, eight hundred thirteen".