3864225961 has 2 divisors, whose sum is σ = 3864225962. Its totient is φ = 3864225960.

The previous prime is 3864225949. The next prime is 3864225977. The reversal of 3864225961 is 1695224683.

3864225961 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2212291225 + 1651934736 = 47035^2 + 40644^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3864225961 is a prime.

It is not a weakly prime, because it can be changed into another prime (3864225661) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1932112980 + 1932112981.

It is an arithmetic number, because the mean of its divisors is an integer number (1932112981).

Almost surely, 2^3864225961 is an apocalyptic number.

It is an amenable number.

3864225961 is a deficient number, since it is larger than the sum of its proper divisors (1).

3864225961 is an equidigital number, since it uses as much as digits as its factorization.

3864225961 is an evil number, because the sum of its binary digits is even.

The product of its digits is 622080, while the sum is 46.

The square root of 3864225961 is about 62162.8985891102. The cubic root of 3864225961 is about 1569.2332606451.

The spelling of 3864225961 in words is "three billion, eight hundred sixty-four million, two hundred twenty-five thousand, nine hundred sixty-one".