3898020851 has 2 divisors, whose sum is σ = 3898020852. Its totient is φ = 3898020850.

The previous prime is 3898020827. The next prime is 3898020853. The reversal of 3898020851 is 1580208983.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 3898020851 - 2⁶ = 3898020787 is a prime.

Together with 3898020853, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (3898020853) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1949010425 + 1949010426.

It is an arithmetic number, because the mean of its divisors is an integer number (1949010426).

Almost surely, 2^3898020851 is an apocalyptic number.

3898020851 is a deficient number, since it is larger than the sum of its proper divisors (1).

3898020851 is an equidigital number, since it uses as much as digits as its factorization.

3898020851 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 138240, while the sum is 44.

The square root of 3898020851 is about 62434.1320993573. The cubic root of 3898020851 is about 1573.7946065275.

The spelling of 3898020851 in words is "three billion, eight hundred ninety-eight million, twenty thousand, eight hundred fifty-one".