3820867865 has 8 divisors (see below), whose sum is σ = 4588990848. Its totient is φ = 3054061360.

The previous prime is 3820867837. The next prime is 3820867873. The reversal of 3820867865 is 5687680283.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 3820867865 - 2²² = 3816673561 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 322721 + ... + 334350.

It is an arithmetic number, because the mean of its divisors is an integer number (573623856).

Almost surely, 2^3820867865 is an apocalyptic number.

It is an amenable number.

3820867865 is a deficient number, since it is larger than the sum of its proper divisors (768122983).

3820867865 is a wasteful number, since it uses less digits than its factorization.

3820867865 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 658239.

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

The square root of 3820867865 is about 61813.1690257020. The cubic root of 3820867865 is about 1563.3420386412.

The spelling of 3820867865 in words is "three billion, eight hundred twenty million, eight hundred sixty-seven thousand, eight hundred sixty-five".