1940968973 has 2 divisors, whose sum is σ = 1940968974. Its totient is φ = 1940968972.

The previous prime is 1940968901. The next prime is 1940969039. The reversal of 1940968973 is 3798690491.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1729062724 + 211906249 = 41582^2 + 14557^2 .

It is a cyclic number.

It is not a de Polignac number, because 1940968973 - 2¹⁰ = 1940967949 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1940968273) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 970484486 + 970484487.

It is an arithmetic number, because the mean of its divisors is an integer number (970484487).

Almost surely, 2^1940968973 is an apocalyptic number.

It is an amenable number.

1940968973 is a deficient number, since it is larger than the sum of its proper divisors (1).

1940968973 is an equidigital number, since it uses as much as digits as its factorization.

1940968973 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2939328, while the sum is 56.

The square root of 1940968973 is about 44056.4294172826. The cubic root of 1940968973 is about 1247.4013154548.

The spelling of 1940968973 in words is "one billion, nine hundred forty million, nine hundred sixty-eight thousand, nine hundred seventy-three".