2166971020 has 12 divisors (see below), whose sum is σ = 4550639184. Its totient is φ = 866788400.

The previous prime is 2166971003. The next prime is 2166971039. The reversal of 2166971020 is 201796612.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 54174256 + ... + 54174295.

It is an arithmetic number, because the mean of its divisors is an integer number (379219932).

Almost surely, 2^2166971020 is an apocalyptic number.

2166971020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2166971020 is an abundant number, since it is smaller than the sum of its proper divisors (2383668164).

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

2166971020 is a wasteful number, since it uses less digits than its factorization.

2166971020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 108348560 (or 108348558 counting only the distinct ones).

The product of its (nonzero) digits is 9072, while the sum is 34.

The square root of 2166971020 is about 46550.7359769961. The cubic root of 2166971020 is about 1294.0499324989.

The spelling of 2166971020 in words is "two billion, one hundred sixty-six million, nine hundred seventy-one thousand, twenty".