3868690641 has 4 divisors (see below), whose sum is σ = 5158254192. Its totient is φ = 2579127092.

The previous prime is 3868690627. The next prime is 3868690667. The reversal of 3868690641 is 1460968683.

3868690641 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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.

It is a cyclic number.

It is not a de Polignac number, because 3868690641 - 2⁷ = 3868690513 is a prime.

It is not an unprimeable number, because it can be changed into a prime (3868690691) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 644781771 + ... + 644781776.

It is an arithmetic number, because the mean of its divisors is an integer number (1289563548).

Almost surely, 2^3868690641 is an apocalyptic number.

It is an amenable number.

3868690641 is a deficient number, since it is larger than the sum of its proper divisors (1289563551).

3868690641 is a wasteful number, since it uses less digits than its factorization.

3868690641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1289563550.

The product of its (nonzero) digits is 1492992, while the sum is 51.

The square root of 3868690641 is about 62198.7993533637. The cubic root of 3868690641 is about 1569.8373857568.

The spelling of 3868690641 in words is "three billion, eight hundred sixty-eight million, six hundred ninety thousand, six hundred forty-one".