6749641894 has 16 divisors (see below), whose sum is σ = 10344112128. Its totient is φ = 3301663432.

The previous prime is 6749641891. The next prime is 6749641901. The reversal of 6749641894 is 4981469476.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6749641891) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 239217 + ... + 265939.

It is an arithmetic number, because the mean of its divisors is an integer number (646507008).

Almost surely, 2^6749641894 is an apocalyptic number.

6749641894 is a deficient number, since it is larger than the sum of its proper divisors (3594470234).

6749641894 is a wasteful number, since it uses less digits than its factorization.

6749641894 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29459.

The product of its digits is 10450944, while the sum is 58.

The square root of 6749641894 is about 82156.2042331558. The cubic root of 6749641894 is about 1889.8481531189.

The spelling of 6749641894 in words is "six billion, seven hundred forty-nine million, six hundred forty-one thousand, eight hundred ninety-four".