2071920817 has 2 divisors, whose sum is σ = 2071920818. Its totient is φ = 2071920816.

The previous prime is 2071920803. The next prime is 2071920839. The reversal of 2071920817 is 7180291702.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1654781041 + 417139776 = 40679^2 + 20424^2 .

It is a cyclic number.

It is not a de Polignac number, because 2071920817 - 2¹¹ = 2071918769 is a prime.

It is not a weakly prime, because it can be changed into another prime (2071920847) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1035960408 + 1035960409.

It is an arithmetic number, because the mean of its divisors is an integer number (1035960409).

Almost surely, 2^2071920817 is an apocalyptic number.

It is an amenable number.

2071920817 is a deficient number, since it is larger than the sum of its proper divisors (1).

2071920817 is an equidigital number, since it uses as much as digits as its factorization.

2071920817 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 14112, while the sum is 37.

The square root of 2071920817 is about 45518.3569233337. The cubic root of 2071920817 is about 1274.8459774473.

The spelling of 2071920817 in words is "two billion, seventy-one million, nine hundred twenty thousand, eight hundred seventeen".