6745823549 has 4 divisors (see below), whose sum is σ = 6755103264. Its totient is φ = 6736543836.

The previous prime is 6745823543. The next prime is 6745823563. The reversal of 6745823549 is 9453285476.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 6745823549 - 2³² = 2450856253 is a prime.

It is a super-2 number, since 2×6745823549² = 91012270708485910802, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 6745823549.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6745823543) 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, 4638767 + ... + 4640220.

It is an arithmetic number, because the mean of its divisors is an integer number (1688775816).

Almost surely, 2^6745823549 is an apocalyptic number.

It is an amenable number.

6745823549 is a deficient number, since it is larger than the sum of its proper divisors (9279715).

6745823549 is an equidigital number, since it uses as much as digits as its factorization.

6745823549 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9279714.

The product of its digits is 7257600, while the sum is 53.

The square root of 6745823549 is about 82132.9626215930. The cubic root of 6745823549 is about 1889.4917167564.

The spelling of 6745823549 in words is "six billion, seven hundred forty-five million, eight hundred twenty-three thousand, five hundred forty-nine".