6534603909 has 8 divisors (see below), whose sum is σ = 9680894720. Its totient is φ = 4356402588.

The previous prime is 6534603869. The next prime is 6534603953. The reversal of 6534603909 is 9093064356.

It is a happy number.

6534603909 is a `hidden beast` number, since 6 + 5 + 34 + 603 + 9 + 0 + 9 = 666.

It is not a de Polignac number, because 6534603909 - 2²⁰ = 6533555333 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6534603109) 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, 121011157 + ... + 121011210.

It is an arithmetic number, because the mean of its divisors is an integer number (1210111840).

Almost surely, 2^6534603909 is an apocalyptic number.

It is an amenable number.

6534603909 is a deficient number, since it is larger than the sum of its proper divisors (3146290811).

6534603909 is a wasteful number, since it uses less digits than its factorization.

6534603909 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 242022376 (or 242022370 counting only the distinct ones).

The product of its (nonzero) digits is 524880, while the sum is 45.

The square root of 6534603909 is about 80836.8969530622. The cubic root of 6534603909 is about 1869.5615002223.

The spelling of 6534603909 in words is "six billion, five hundred thirty-four million, six hundred three thousand, nine hundred nine".