3921925870 has 8 divisors (see below), whose sum is σ = 7059466584. Its totient is φ = 1568770344.

The previous prime is 3921925781. The next prime is 3921925871. The reversal of 3921925870 is 785291293.

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

It is a self number, because there is not a number n which added to its sum of digits gives 3921925870.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3921925871) 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, 196096284 + ... + 196096303.

It is an arithmetic number, because the mean of its divisors is an integer number (882433323).

Almost surely, 2^3921925870 is an apocalyptic number.

3921925870 is a deficient number, since it is larger than the sum of its proper divisors (3137540714).

3921925870 is a wasteful number, since it uses less digits than its factorization.

3921925870 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 392192594.

The product of its (nonzero) digits is 272160, while the sum is 46.

The square root of 3921925870 is about 62625.2813965734. The cubic root of 3921925870 is about 1577.0052054658.

The spelling of 3921925870 in words is "three billion, nine hundred twenty-one million, nine hundred twenty-five thousand, eight hundred seventy".