3870500861 has 8 divisors (see below), whose sum is σ = 3887038848. Its totient is φ = 3853980000.

The previous prime is 3870500839. The next prime is 3870500873. The reversal of 3870500861 is 1680050783.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3870500861 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3870500261) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 658586 + ... + 664436.

It is an arithmetic number, because the mean of its divisors is an integer number (485879856).

Almost surely, 2^3870500861 is an apocalyptic number.

It is an amenable number.

3870500861 is a deficient number, since it is larger than the sum of its proper divisors (16537987).

3870500861 is a wasteful number, since it uses less digits than its factorization.

3870500861 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8563.

The product of its (nonzero) digits is 40320, while the sum is 38.

The square root of 3870500861 is about 62213.3495401108. The cubic root of 3870500861 is about 1570.0821979494.

The spelling of 3870500861 in words is "three billion, eight hundred seventy million, five hundred thousand, eight hundred sixty-one".