7309747845 has 24 divisors (see below), whose sum is σ = 12848689152. Its totient is φ = 3843621600.

The previous prime is 7309747831. The next prime is 7309747867. The reversal of 7309747845 is 5487479037.

It is not a de Polignac number, because 7309747845 - 2⁷ = 7309747717 is a prime.

It is a Smith number, since the sum of its digits (54) coincides with the sum of the digits of its prime factors.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 7309747791 and 7309747800.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1140741 + ... + 1147130.

It is an arithmetic number, because the mean of its divisors is an integer number (535362048).

Almost surely, 2^7309747845 is an apocalyptic number.

It is an amenable number.

7309747845 is a deficient number, since it is larger than the sum of its proper divisors (5538941307).

7309747845 is a wasteful number, since it uses less digits than its factorization.

7309747845 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2287953 (or 2287950 counting only the distinct ones).

The product of its (nonzero) digits is 5927040, while the sum is 54.

The square root of 7309747845 is about 85497.0633706211. The cubic root of 7309747845 is about 1940.7404837030.

The spelling of 7309747845 in words is "seven billion, three hundred nine million, seven hundred forty-seven thousand, eight hundred forty-five".