6472164891 has 4 divisors (see below), whose sum is σ = 8629553192. Its totient is φ = 4314776592.

The previous prime is 6472164887. The next prime is 6472164893. The reversal of 6472164891 is 1984612746.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 6472164891 - 2² = 6472164887 is a prime.

It is a super-3 number, since 3×6472164891³ (a number of 30 digits) contains 333 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 6472164891.

It is not an unprimeable number, because it can be changed into a prime (6472164893) 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, 1078694146 + ... + 1078694151.

It is an arithmetic number, because the mean of its divisors is an integer number (2157388298).

Almost surely, 2^6472164891 is an apocalyptic number.

6472164891 is a deficient number, since it is larger than the sum of its proper divisors (2157388301).

6472164891 is a wasteful number, since it uses less digits than its factorization.

6472164891 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2157388300.

The product of its digits is 580608, while the sum is 48.

The square root of 6472164891 is about 80449.7662582061. The cubic root of 6472164891 is about 1863.5877960354.

The spelling of 6472164891 in words is "six billion, four hundred seventy-two million, one hundred sixty-four thousand, eight hundred ninety-one".