1889496885517 has 2 divisors, whose sum is σ = 1889496885518. Its totient is φ = 1889496885516.

The previous prime is 1889496885491. The next prime is 1889496885593. The reversal of 1889496885517 is 7155886949881.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1147338757321 + 742158128196 = 1071139^2 + 861486^2 .

It is a cyclic number.

It is not a de Polignac number, because 1889496885517 - 2¹⁹ = 1889496361229 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1889496805517) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 944748442758 + 944748442759.

It is an arithmetic number, because the mean of its divisors is an integer number (944748442759).

Almost surely, 2^{1889496885517} is an apocalyptic number.

It is an amenable number.

1889496885517 is a deficient number, since it is larger than the sum of its proper divisors (1).

1889496885517 is an equidigital number, since it uses as much as digits as its factorization.

1889496885517 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1393459200, while the sum is 79.

The spelling of 1889496885517 in words is "one trillion, eight hundred eighty-nine billion, four hundred ninety-six million, eight hundred eighty-five thousand, five hundred seventeen".