2180809970 has 16 divisors (see below), whose sum is σ = 4031552088. Its totient is φ = 848747520.

The previous prime is 2180809951. The next prime is 2180809999. The reversal of 2180809970 is 799080812.

It can be written as a sum of positive squares in 4 ways, for example, as 2155094929 + 25715041 = 46423^2 + 5071^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2946671 + ... + 2947410.

Almost surely, 2^2180809970 is an apocalyptic number.

2180809970 is a deficient number, since it is larger than the sum of its proper divisors (1850742118).

2180809970 is a wasteful number, since it uses less digits than its factorization.

2180809970 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5894125.

The product of its (nonzero) digits is 72576, while the sum is 44.

The square root of 2180809970 is about 46699.1431398907. The cubic root of 2180809970 is about 1296.7988239536.

The spelling of 2180809970 in words is "two billion, one hundred eighty million, eight hundred nine thousand, nine hundred seventy".