7961390830 has 32 divisors (see below), whose sum is σ = 15089679360. Its totient is φ = 3015960480.

The previous prime is 7961390779. The next prime is 7961390839. The reversal of 7961390830 is 380931697.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7961390839) 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 15 ways as a sum of consecutive naturals, for example, 867727 + ... + 876853.

It is an arithmetic number, because the mean of its divisors is an integer number (471552480).

Almost surely, 2^7961390830 is an apocalyptic number.

7961390830 is a deficient number, since it is larger than the sum of its proper divisors (7128288530).

7961390830 is a wasteful number, since it uses less digits than its factorization.

7961390830 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13744.

The product of its (nonzero) digits is 244944, while the sum is 46.

The square root of 7961390830 is about 89226.6262390325. The cubic root of 7961390830 is about 1996.7773793136. Note that the first 3 decimals are identical.

The spelling of 7961390830 in words is "seven billion, nine hundred sixty-one million, three hundred ninety thousand, eight hundred thirty".