1940108957 has 2 divisors, whose sum is σ = 1940108958. Its totient is φ = 1940108956.

The previous prime is 1940108917. The next prime is 1940108987. The reversal of 1940108957 is 7598010491.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1324523236 + 615585721 = 36394^2 + 24811^2 .

It is a cyclic number.

It is not a de Polignac number, because 1940108957 - 2¹² = 1940104861 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1940108917) 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, 970054478 + 970054479.

It is an arithmetic number, because the mean of its divisors is an integer number (970054479).

Almost surely, 2^1940108957 is an apocalyptic number.

It is an amenable number.

1940108957 is a deficient number, since it is larger than the sum of its proper divisors (1).

1940108957 is an equidigital number, since it uses as much as digits as its factorization.

1940108957 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 90720, while the sum is 44.

The square root of 1940108957 is about 44046.6679443519. The cubic root of 1940108957 is about 1247.2170529225.

The spelling of 1940108957 in words is "one billion, nine hundred forty million, one hundred eight thousand, nine hundred fifty-seven".