1942049957 has 2 divisors, whose sum is σ = 1942049958. Its totient is φ = 1942049956.

The previous prime is 1942049953. The next prime is 1942050013. The reversal of 1942049957 is 7599402491.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1922033281 + 20016676 = 43841^2 + 4474^2 .

It is a cyclic number.

It is not a de Polignac number, because 1942049957 - 2² = 1942049953 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1942049951) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 971024978 + 971024979.

It is an arithmetic number, because the mean of its divisors is an integer number (971024979).

Almost surely, 2^1942049957 is an apocalyptic number.

It is an amenable number.

1942049957 is a deficient number, since it is larger than the sum of its proper divisors (1).

1942049957 is an equidigital number, since it uses as much as digits as its factorization.

1942049957 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 816480, while the sum is 50.

The square root of 1942049957 is about 44068.6958849476. The cubic root of 1942049957 is about 1247.6328442486.

The spelling of 1942049957 in words is "one billion, nine hundred forty-two million, forty-nine thousand, nine hundred fifty-seven".