7989131830 has 32 divisors (see below), whose sum is σ = 14938963200. Its totient is φ = 3072850560.

The previous prime is 7989131807. The next prime is 7989131849. The reversal of 7989131830 is 381319897.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 33405 + ... + 130744.

It is an arithmetic number, because the mean of its divisors is an integer number (466842600).

Almost surely, 2^7989131830 is an apocalyptic number.

7989131830 is a deficient number, since it is larger than the sum of its proper divisors (6949831370).

7989131830 is a wasteful number, since it uses less digits than its factorization.

7989131830 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 164344.

The product of its (nonzero) digits is 326592, while the sum is 49.

The square root of 7989131830 is about 89381.9435344746. The cubic root of 7989131830 is about 1999.0939087280.

The spelling of 7989131830 in words is "seven billion, nine hundred eighty-nine million, one hundred thirty-one thousand, eight hundred thirty".