7909159128 has 32 divisors (see below), whose sum is σ = 21293890800. Its totient is φ = 2433587328.

The previous prime is 7909159121. The next prime is 7909159171. The reversal of 7909159128 is 8219519097.

It is a super-2 number, since 2×7909159128² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7909159121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12674623 + ... + 12675246.

Almost surely, 2^7909159128 is an apocalyptic number.

7909159128 is a gapful number since it is divisible by the number (78) formed by its first and last digit.

It is an amenable number.

7909159128 is an abundant number, since it is smaller than the sum of its proper divisors (13384731672).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

7909159128 is a wasteful number, since it uses less digits than its factorization.

7909159128 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25349891 (or 25349887 counting only the distinct ones).

The product of its (nonzero) digits is 408240, while the sum is 51.

The square root of 7909159128 is about 88933.4533682348. The cubic root of 7909159128 is about 1992.4010921990.

The spelling of 7909159128 in words is "seven billion, nine hundred nine million, one hundred fifty-nine thousand, one hundred twenty-eight".