2164658680 has 16 divisors (see below), whose sum is σ = 4870482120. Its totient is φ = 865863456.

The previous prime is 2164658663. The next prime is 2164658689. The reversal of 2164658680 is 868564612.

It is a self number, because there is not a number n which added to its sum of digits gives 2164658680.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2164658689) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 27058194 + ... + 27058273.

Almost surely, 2^2164658680 is an apocalyptic number.

2164658680 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2164658680 is an abundant number, since it is smaller than the sum of its proper divisors (2705823440).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2164658680 is a wasteful number, since it uses less digits than its factorization.

2164658680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54116478 (or 54116474 counting only the distinct ones).

The product of its (nonzero) digits is 552960, while the sum is 46.

The square root of 2164658680 is about 46525.8925760699. The cubic root of 2164658680 is about 1293.5894820415.

The spelling of 2164658680 in words is "two billion, one hundred sixty-four million, six hundred fifty-eight thousand, six hundred eighty".