1980107263489 has 2 divisors, whose sum is σ = 1980107263490. Its totient is φ = 1980107263488.

The previous prime is 1980107263483. The next prime is 1980107263517. The reversal of 1980107263489 is 9843627010891.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1357283250625 + 622824012864 = 1165025^2 + 789192^2 .

It is a cyclic number.

It is not a de Polignac number, because 1980107263489 - 2⁷ = 1980107263361 is a prime.

It is not a weakly prime, because it can be changed into another prime (1980107263483) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 990053631744 + 990053631745.

It is an arithmetic number, because the mean of its divisors is an integer number (990053631745).

Almost surely, 2^{1980107263489} is an apocalyptic number.

It is an amenable number.

1980107263489 is a deficient number, since it is larger than the sum of its proper divisors (1).

1980107263489 is an equidigital number, since it uses as much as digits as its factorization.

1980107263489 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5225472, while the sum is 58.

The spelling of 1980107263489 in words is "one trillion, nine hundred eighty billion, one hundred seven million, two hundred sixty-three thousand, four hundred eighty-nine".