1942682689 has 2 divisors, whose sum is σ = 1942682690. Its totient is φ = 1942682688.

The previous prime is 1942682671. The next prime is 1942682713. The reversal of 1942682689 is 9862862491.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1678295089 + 264387600 = 40967^2 + 16260^2 .

It is an emirp because it is prime and its reverse (9862862491) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1942682689 - 2⁷ = 1942682561 is a prime.

It is not a weakly prime, because it can be changed into another prime (1942682659) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 971341344 + 971341345.

It is an arithmetic number, because the mean of its divisors is an integer number (971341345).

Almost surely, 2^1942682689 is an apocalyptic number.

It is an amenable number.

1942682689 is a deficient number, since it is larger than the sum of its proper divisors (1).

1942682689 is an equidigital number, since it uses as much as digits as its factorization.

1942682689 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2985984, while the sum is 55.

The square root of 1942682689 is about 44075.8742284257. The cubic root of 1942682689 is about 1247.7683250593.

The spelling of 1942682689 in words is "one billion, nine hundred forty-two million, six hundred eighty-two thousand, six hundred eighty-nine".