6475681749 has 8 divisors (see below), whose sum is σ = 8651207520. Its totient is φ = 4308638576.

The previous prime is 6475681733. The next prime is 6475681787. The reversal of 6475681749 is 9471865746.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 6475681749 - 2⁴ = 6475681733 is a prime.

It is a super-2 number, since 2×6475681749² = 83868908228663398002, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6475681649) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2118867 + ... + 2121920.

It is an arithmetic number, because the mean of its divisors is an integer number (1081400940).

Almost surely, 2^6475681749 is an apocalyptic number.

It is an amenable number.

6475681749 is a deficient number, since it is larger than the sum of its proper divisors (2175525771).

6475681749 is a wasteful number, since it uses less digits than its factorization.

6475681749 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4241299.

The product of its digits is 10160640, while the sum is 57.

The square root of 6475681749 is about 80471.6207678210. The cubic root of 6475681749 is about 1863.9252816122.

The spelling of 6475681749 in words is "six billion, four hundred seventy-five million, six hundred eighty-one thousand, seven hundred forty-nine".