1906326673 has 2 divisors, whose sum is σ = 1906326674. Its totient is φ = 1906326672.

The previous prime is 1906326589. The next prime is 1906326701. The reversal of 1906326673 is 3766236091.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1464822529 + 441504144 = 38273^2 + 21012^2 .

It is an emirp because it is prime and its reverse (3766236091) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1906326673 - 2¹³ = 1906318481 is a prime.

It is not a weakly prime, because it can be changed into another prime (1906326473) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 953163336 + 953163337.

It is an arithmetic number, because the mean of its divisors is an integer number (953163337).

Almost surely, 2^1906326673 is an apocalyptic number.

It is an amenable number.

1906326673 is a deficient number, since it is larger than the sum of its proper divisors (1).

1906326673 is an equidigital number, since it uses as much as digits as its factorization.

1906326673 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 244944, while the sum is 43.

The square root of 1906326673 is about 43661.5010392451. The cubic root of 1906326673 is about 1239.9355397033.

The spelling of 1906326673 in words is "one billion, nine hundred six million, three hundred twenty-six thousand, six hundred seventy-three".