3486831891 has 4 divisors (see below), whose sum is σ = 4649109192. Its totient is φ = 2324554592.

The previous prime is 3486831883. The next prime is 3486831913. The reversal of 3486831891 is 1981386843.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1981386843 = 3 ⋅660462281.

It is a cyclic number.

It is not a de Polignac number, because 3486831891 - 2³ = 3486831883 is a prime.

It is not an unprimeable number, because it can be changed into a prime (3486831811) 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, 581138646 + ... + 581138651.

It is an arithmetic number, because the mean of its divisors is an integer number (1162277298).

Almost surely, 2^3486831891 is an apocalyptic number.

3486831891 is a deficient number, since it is larger than the sum of its proper divisors (1162277301).

3486831891 is a wasteful number, since it uses less digits than its factorization.

3486831891 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1162277300.

The product of its digits is 995328, while the sum is 51.

The square root of 3486831891 is about 59049.4021222908. The cubic root of 3486831891 is about 1516.3879913433.

The spelling of 3486831891 in words is "three billion, four hundred eighty-six million, eight hundred thirty-one thousand, eight hundred ninety-one".