2071681877 has 2 divisors, whose sum is σ = 2071681878. Its totient is φ = 2071681876.

The previous prime is 2071681823. The next prime is 2071681943. The reversal of 2071681877 is 7781861702.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1643978116 + 427703761 = 40546^2 + 20681^2 .

It is a cyclic number.

It is not a de Polignac number, because 2071681877 - 2⁶ = 2071681813 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2071681177) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1035840938 + 1035840939.

It is an arithmetic number, because the mean of its divisors is an integer number (1035840939).

Almost surely, 2^2071681877 is an apocalyptic number.

It is an amenable number.

2071681877 is a deficient number, since it is larger than the sum of its proper divisors (1).

2071681877 is an equidigital number, since it uses as much as digits as its factorization.

2071681877 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 263424, while the sum is 47.

The square root of 2071681877 is about 45515.7321922871. The cubic root of 2071681877 is about 1274.7969692346.

The spelling of 2071681877 in words is "two billion, seventy-one million, six hundred eighty-one thousand, eight hundred seventy-seven".