6743491109 has 4 divisors (see below), whose sum is σ = 6767489580. Its totient is φ = 6719492640.

The previous prime is 6743491091. The next prime is 6743491171. The reversal of 6743491109 is 9011943476.

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

It can be written as a sum of positive squares in 2 ways, for example, as 2761502500 + 3981988609 = 52550^2 + 63103^2 .

It is a cyclic number.

It is not a de Polignac number, because 6743491109 - 2¹⁶ = 6743425573 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 6743491109.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6743493109) 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, 11998814 + ... + 11999375.

It is an arithmetic number, because the mean of its divisors is an integer number (1691872395).

Almost surely, 2^6743491109 is an apocalyptic number.

It is an amenable number.

6743491109 is a deficient number, since it is larger than the sum of its proper divisors (23998471).

6743491109 is a wasteful number, since it uses less digits than its factorization.

6743491109 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23998470.

The product of its (nonzero) digits is 163296, while the sum is 44.

The square root of 6743491109 is about 82118.7622227710. The cubic root of 6743491109 is about 1889.2739210560.

The spelling of 6743491109 in words is "six billion, seven hundred forty-three million, four hundred ninety-one thousand, one hundred nine".