3875242649 has 2 divisors, whose sum is σ = 3875242650. Its totient is φ = 3875242648.

The previous prime is 3875242621. The next prime is 3875242663. The reversal of 3875242649 is 9462425783.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3838422025 + 36820624 = 61955^2 + 6068^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3875242649 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 3875242597 and 3875242606.

It is not a weakly prime, because it can be changed into another prime (3875242549) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1937621324 + 1937621325.

It is an arithmetic number, because the mean of its divisors is an integer number (1937621325).

Almost surely, 2^3875242649 is an apocalyptic number.

It is an amenable number.

3875242649 is a deficient number, since it is larger than the sum of its proper divisors (1).

3875242649 is an equidigital number, since it uses as much as digits as its factorization.

3875242649 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2903040, while the sum is 50.

The square root of 3875242649 is about 62251.4469631028. The cubic root of 3875242649 is about 1570.7231105812.

The spelling of 3875242649 in words is "three billion, eight hundred seventy-five million, two hundred forty-two thousand, six hundred forty-nine".