3906101891 has 8 divisors (see below), whose sum is σ = 4084245504. Its totient is φ = 3728651080.

The previous prime is 3906101869. The next prime is 3906101921. The reversal of 3906101891 is 1981016093.

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

It is a cyclic number.

It is not a de Polignac number, because 3906101891 - 2¹⁴ = 3906085507 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3906101821) 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, 161651 + ... + 184236.

It is an arithmetic number, because the mean of its divisors is an integer number (510530688).

Almost surely, 2^3906101891 is an apocalyptic number.

3906101891 is a deficient number, since it is larger than the sum of its proper divisors (178143613).

3906101891 is a wasteful number, since it uses less digits than its factorization.

3906101891 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 346401.

The product of its (nonzero) digits is 11664, while the sum is 38.

The square root of 3906101891 is about 62498.8151167684. The cubic root of 3906101891 is about 1574.8814075147.

The spelling of 3906101891 in words is "three billion, nine hundred six million, one hundred one thousand, eight hundred ninety-one".