3898488342649 has 2 divisors, whose sum is σ = 3898488342650. Its totient is φ = 3898488342648.

The previous prime is 3898488342613. The next prime is 3898488342659. The reversal of 3898488342649 is 9462438848983.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3613679337024 + 284809005625 = 1900968^2 + 533675^2 .

It is a cyclic number.

It is not a de Polignac number, because 3898488342649 - 2¹⁹ = 3898487818361 is a prime.

It is a super-2 number, since 2×3898488342649² (a number of 26 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (3898488342659) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1949244171324 + 1949244171325.

It is an arithmetic number, because the mean of its divisors is an integer number (1949244171325).

Almost surely, 2^{3898488342649} is an apocalyptic number.

It is an amenable number.

3898488342649 is a deficient number, since it is larger than the sum of its proper divisors (1).

3898488342649 is an equidigital number, since it uses as much as digits as its factorization.

3898488342649 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2293235712, while the sum is 76.

The spelling of 3898488342649 in words is "three trillion, eight hundred ninety-eight billion, four hundred eighty-eight million, three hundred forty-two thousand, six hundred forty-nine".