1973770213 has 2 divisors, whose sum is σ = 1973770214. Its totient is φ = 1973770212.

The previous prime is 1973770033. The next prime is 1973770283. The reversal of 1973770213 is 3120773791.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1215428769 + 758341444 = 34863^2 + 27538^2 .

It is a cyclic number.

It is not a de Polignac number, because 1973770213 - 2⁹ = 1973769701 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1973770283) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 986885106 + 986885107.

It is an arithmetic number, because the mean of its divisors is an integer number (986885107).

Almost surely, 2^1973770213 is an apocalyptic number.

It is an amenable number.

1973770213 is a deficient number, since it is larger than the sum of its proper divisors (1).

1973770213 is an equidigital number, since it uses as much as digits as its factorization.

1973770213 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 55566, while the sum is 40.

The square root of 1973770213 is about 44427.1337472946. The cubic root of 1973770213 is about 1254.3888842277.

The spelling of 1973770213 in words is "one billion, nine hundred seventy-three million, seven hundred seventy thousand, two hundred thirteen".