1328993630 has 8 divisors (see below), whose sum is σ = 2392188552. Its totient is φ = 531597448.

The previous prime is 1328993629. The next prime is 1328993663. The reversal of 1328993630 is 363998231.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 66449672 + ... + 66449691.

It is an arithmetic number, because the mean of its divisors is an integer number (299023569).

Almost surely, 2^1328993630 is an apocalyptic number.

1328993630 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1328993630 is a deficient number, since it is larger than the sum of its proper divisors (1063194922).

1328993630 is a wasteful number, since it uses less digits than its factorization.

1328993630 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 132899370.

The product of its (nonzero) digits is 209952, while the sum is 44.

The square root of 1328993630 is about 36455.3649001076. The cubic root of 1328993630 is about 1099.4470030332.

The spelling of 1328993630 in words is "one billion, three hundred twenty-eight million, nine hundred ninety-three thousand, six hundred thirty".