3878348641 has 2 divisors, whose sum is σ = 3878348642. Its totient is φ = 3878348640.

The previous prime is 3878348633. The next prime is 3878348687. The reversal of 3878348641 is 1468438783.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3355769041 + 522579600 = 57929^2 + 22860^2 .

It is a cyclic number.

It is not a de Polignac number, because 3878348641 - 2³ = 3878348633 is a prime.

It is a super-2 number, since 2×3878348641² = 30083176362293093762, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (3878348041) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1939174320 + 1939174321.

It is an arithmetic number, because the mean of its divisors is an integer number (1939174321).

Almost surely, 2^3878348641 is an apocalyptic number.

It is an amenable number.

3878348641 is a deficient number, since it is larger than the sum of its proper divisors (1).

3878348641 is an equidigital number, since it uses as much as digits as its factorization.

3878348641 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3096576, while the sum is 52.

The square root of 3878348641 is about 62276.3891133710. The cubic root of 3878348641 is about 1571.1426413505.

The spelling of 3878348641 in words is "three billion, eight hundred seventy-eight million, three hundred forty-eight thousand, six hundred forty-one".