6658481930 has 32 divisors (see below), whose sum is σ = 12056659920. Its totient is φ = 2647572480.

The previous prime is 6658481911. The next prime is 6658481939. The reversal of 6658481930 is 391848566.

It can be written as a sum of positive squares in 8 ways, for example, as 2984546161 + 3673935769 = 54631^2 + 60613^2 .

It is a super-2 number, since 2×6658481930² = 88670763224273049800, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (6658481939) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1387976 + ... + 1392764.

Almost surely, 2^6658481930 is an apocalyptic number.

6658481930 is a deficient number, since it is larger than the sum of its proper divisors (5398177990).

6658481930 is a wasteful number, since it uses less digits than its factorization.

6658481930 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5594.

The product of its (nonzero) digits is 1244160, while the sum is 50.

The square root of 6658481930 is about 81599.5216284998. The cubic root of 6658481930 is about 1881.3015291383.

The spelling of 6658481930 in words is "six billion, six hundred fifty-eight million, four hundred eighty-one thousand, nine hundred thirty".