3835878641 has 4 divisors (see below), whose sum is σ = 4383861312. Its totient is φ = 3287895972.

The previous prime is 3835878619. The next prime is 3835878643. The reversal of 3835878641 is 1468785383.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 1468785383 = 13 ⋅112983491.

It is a cyclic number.

It is not a de Polignac number, because 3835878641 - 2⁶ = 3835878577 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (3835878643) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 273991325 + ... + 273991338.

It is an arithmetic number, because the mean of its divisors is an integer number (1095965328).

Almost surely, 2^3835878641 is an apocalyptic number.

It is an amenable number.

3835878641 is a deficient number, since it is larger than the sum of its proper divisors (547982671).

3835878641 is an equidigital number, since it uses as much as digits as its factorization.

3835878641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 547982670.

The product of its digits is 3870720, while the sum is 53.

The square root of 3835878641 is about 61934.4705394339. The cubic root of 3835878641 is about 1565.3866276243.

The spelling of 3835878641 in words is "three billion, eight hundred thirty-five million, eight hundred seventy-eight thousand, six hundred forty-one".