6533894409 has 16 divisors (see below), whose sum is σ = 9983551488. Its totient is φ = 3723476112.

The previous prime is 6533894399. The next prime is 6533894447. The reversal of 6533894409 is 9044983356.

It is not a de Polignac number, because 6533894409 - 2⁹ = 6533893897 is a prime.

It is a super-2 number, since 2×6533894409² = 85383552295922918562, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (6533890409) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 416187 + ... + 431600.

It is an arithmetic number, because the mean of its divisors is an integer number (623971968).

Almost surely, 2^6533894409 is an apocalyptic number.

It is an amenable number.

6533894409 is a deficient number, since it is larger than the sum of its proper divisors (3449657079).

6533894409 is a wasteful number, since it uses less digits than its factorization.

6533894409 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 848164.

The product of its (nonzero) digits is 2799360, while the sum is 51.

The square root of 6533894409 is about 80832.5083676116. The cubic root of 6533894409 is about 1869.4938347135.

The spelling of 6533894409 in words is "six billion, five hundred thirty-three million, eight hundred ninety-four thousand, four hundred nine".