3857425643 has 2 divisors, whose sum is σ = 3857425644. Its totient is φ = 3857425642.

The previous prime is 3857425609. The next prime is 3857425661. The reversal of 3857425643 is 3465247583.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 3857425643 - 2¹⁰ = 3857424619 is a prime.

It is not a weakly prime, because it can be changed into another prime (3857425603) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1928712821 + 1928712822.

It is an arithmetic number, because the mean of its divisors is an integer number (1928712822).

Almost surely, 2^3857425643 is an apocalyptic number.

3857425643 is a deficient number, since it is larger than the sum of its proper divisors (1).

3857425643 is an equidigital number, since it uses as much as digits as its factorization.

3857425643 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2419200, while the sum is 47.

The square root of 3857425643 is about 62108.1769415268. The cubic root of 3857425643 is about 1568.3122007098.

The spelling of 3857425643 in words is "three billion, eight hundred fifty-seven million, four hundred twenty-five thousand, six hundred forty-three".