1662000910789 has 2 divisors, whose sum is σ = 1662000910790. Its totient is φ = 1662000910788.

The previous prime is 1662000910747. The next prime is 1662000910811. The reversal of 1662000910789 is 9870190002661.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 977790701889 + 684210208900 = 988833^2 + 827170^2 .

It is a cyclic number.

It is not a de Polignac number, because 1662000910789 - 2²¹ = 1661998813637 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1662000910729) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 831000455394 + 831000455395.

It is an arithmetic number, because the mean of its divisors is an integer number (831000455395).

Almost surely, 2^{1662000910789} is an apocalyptic number.

It is an amenable number.

1662000910789 is a deficient number, since it is larger than the sum of its proper divisors (1).

1662000910789 is an equidigital number, since it uses as much as digits as its factorization.

1662000910789 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 326592, while the sum is 49.

The spelling of 1662000910789 in words is "one trillion, six hundred sixty-two billion, nine hundred ten thousand, seven hundred eighty-nine".