2000642389 has 2 divisors, whose sum is σ = 2000642390. Its totient is φ = 2000642388.

The previous prime is 2000642377. The next prime is 2000642431. The reversal of 2000642389 is 9832460002.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1614834225 + 385808164 = 40185^2 + 19642^2 .

It is a cyclic number.

It is not a de Polignac number, because 2000642389 - 2²⁵ = 1967087957 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2000642359) 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, 1000321194 + 1000321195.

It is an arithmetic number, because the mean of its divisors is an integer number (1000321195).

Almost surely, 2^2000642389 is an apocalyptic number.

It is an amenable number.

2000642389 is a deficient number, since it is larger than the sum of its proper divisors (1).

2000642389 is an equidigital number, since it uses as much as digits as its factorization.

2000642389 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 20736, while the sum is 34.

The square root of 2000642389 is about 44728.5411007334. The cubic root of 2000642389 is about 1260.0559286923.

The spelling of 2000642389 in words is "two billion, six hundred forty-two thousand, three hundred eighty-nine".