7327861749 has 20 divisors (see below), whose sum is σ = 11788603596. Its totient is φ = 4509452736.

The previous prime is 7327861733. The next prime is 7327861759. The reversal of 7327861749 is 9471687237.

It can be written as a sum of positive squares in 2 ways, for example, as 2370716100 + 4957145649 = 48690^2 + 70407^2 .

It is not a de Polignac number, because 7327861749 - 2⁴ = 7327861733 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 7327861695 and 7327861704.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7327861759) 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 19 ways as a sum of consecutive naturals, for example, 3478464 + ... + 3480569.

Almost surely, 2^7327861749 is an apocalyptic number.

It is an amenable number.

7327861749 is a deficient number, since it is larger than the sum of its proper divisors (4460741847).

7327861749 is a wasteful number, since it uses less digits than its factorization.

7327861749 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6959058 (or 6959049 counting only the distinct ones).

The product of its digits is 3556224, while the sum is 54.

The square root of 7327861749 is about 85602.9307266988. The cubic root of 7327861749 is about 1942.3422438633.

The spelling of 7327861749 in words is "seven billion, three hundred twenty-seven million, eight hundred sixty-one thousand, seven hundred forty-nine".