2120617973 has 2 divisors, whose sum is σ = 2120617974. Its totient is φ = 2120617972.

The previous prime is 2120617909. The next prime is 2120617981. The reversal of 2120617973 is 3797160212.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1248774244 + 871843729 = 35338^2 + 29527^2 .

It is a cyclic number.

It is not a de Polignac number, because 2120617973 - 2⁶ = 2120617909 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2120617073) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1060308986 + 1060308987.

It is an arithmetic number, because the mean of its divisors is an integer number (1060308987).

Almost surely, 2^2120617973 is an apocalyptic number.

It is an amenable number.

2120617973 is a deficient number, since it is larger than the sum of its proper divisors (1).

2120617973 is an equidigital number, since it uses as much as digits as its factorization.

2120617973 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 31752, while the sum is 38.

The square root of 2120617973 is about 46050.1680018651. The cubic root of 2120617973 is about 1284.7564675482.

The spelling of 2120617973 in words is "two billion, one hundred twenty million, six hundred seventeen thousand, nine hundred seventy-three".