3898488347581 has 2 divisors, whose sum is σ = 3898488347582. Its totient is φ = 3898488347580.

The previous prime is 3898488347569. The next prime is 3898488347597. The reversal of 3898488347581 is 1857438848983.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3898488342681 + 4900 = 1974459^2 + 70^2 .

It is an emirp because it is prime and its reverse (1857438848983) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 3898488347581 - 2²⁷ = 3898354129853 is a prime.

It is a super-2 number, since 2×3898488347581² (a number of 26 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 3898488347498 and 3898488347507.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3898488347531) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1949244173790 + 1949244173791.

It is an arithmetic number, because the mean of its divisors is an integer number (1949244173791).

Almost surely, 2^{3898488347581} is an apocalyptic number.

It is an amenable number.

3898488347581 is a deficient number, since it is larger than the sum of its proper divisors (1).

3898488347581 is an equidigital number, since it uses as much as digits as its factorization.

3898488347581 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1486356480, while the sum is 76.

The spelling of 3898488347581 in words is "three trillion, eight hundred ninety-eight billion, four hundred eighty-eight million, three hundred forty-seven thousand, five hundred eighty-one".