3898488347681 has 2 divisors, whose sum is σ = 3898488347682. Its totient is φ = 3898488347680.

The previous prime is 3898488347627. The next prime is 3898488347759. The reversal of 3898488347681 is 1867438848983.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3701987643025 + 196500704656 = 1924055^2 + 443284^2 .

It is a cyclic number.

It is not a de Polignac number, because 3898488347681 - 2³⁰ = 3897414605857 is a prime.

It is a super-3 number, since 3×3898488347681³ (a number of 39 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is not a weakly prime, because it can be changed into another prime (3898488347581) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1949244173840 + 1949244173841.

It is an arithmetic number, because the mean of its divisors is an integer number (1949244173841).

Almost surely, 2^{3898488347681} is an apocalyptic number.

It is an amenable number.

3898488347681 is a deficient number, since it is larger than the sum of its proper divisors (1).

3898488347681 is an equidigital number, since it uses as much as digits as its factorization.

3898488347681 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1783627776, while the sum is 77.

The spelling of 3898488347681 in words is "three trillion, eight hundred ninety-eight billion, four hundred eighty-eight million, three hundred forty-seven thousand, six hundred eighty-one".