7909581346 has 16 divisors (see below), whose sum is σ = 11913852600. Its totient is φ = 3938330368.

The previous prime is 7909581341. The next prime is 7909581371. The reversal of 7909581346 is 6431859097.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 4340833225 + 3568748121 = 65885^2 + 59739^2 .

It is a super-2 number, since 2×7909581346² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 7909581293 and 7909581302.

It is not an unprimeable number, because it can be changed into a prime (7909581341) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 500250 + ... + 515818.

Almost surely, 2^7909581346 is an apocalyptic number.

7909581346 is a deficient number, since it is larger than the sum of its proper divisors (4004271254).

7909581346 is a wasteful number, since it uses less digits than its factorization.

7909581346 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16613.

The product of its (nonzero) digits is 1632960, while the sum is 52.

The square root of 7909581346 is about 88935.8271227069. The cubic root of 7909581346 is about 1992.4365452993.

The spelling of 7909581346 in words is "seven billion, nine hundred nine million, five hundred eighty-one thousand, three hundred forty-six".