1942806289 has 2 divisors, whose sum is σ = 1942806290. Its totient is φ = 1942806288.

The previous prime is 1942806191. The next prime is 1942806311. The reversal of 1942806289 is 9826082491.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1181984400 + 760821889 = 34380^2 + 27583^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1942806289 is a prime.

It is not a weakly prime, because it can be changed into another prime (1942800289) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 971403144 + 971403145.

It is an arithmetic number, because the mean of its divisors is an integer number (971403145).

Almost surely, 2^1942806289 is an apocalyptic number.

It is an amenable number.

1942806289 is a deficient number, since it is larger than the sum of its proper divisors (1).

1942806289 is an equidigital number, since it uses as much as digits as its factorization.

1942806289 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 497664, while the sum is 49.

The square root of 1942806289 is about 44077.2763337301. The cubic root of 1942806289 is about 1247.7947869026.

The spelling of 1942806289 in words is "one billion, nine hundred forty-two million, eight hundred six thousand, two hundred eighty-nine".