1328618416 has 20 divisors (see below), whose sum is σ = 2622769632. Its totient is φ = 651774656.

The previous prime is 1328618399. The next prime is 1328618461. The reversal of 1328618416 is 6148168231.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 782536 + ... + 784231.

Almost surely, 2^1328618416 is an apocalyptic number.

1328618416 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1328618416 is a deficient number, since it is larger than the sum of its proper divisors (1294151216).

1328618416 is a wasteful number, since it uses less digits than its factorization.

1328618416 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1566828 (or 1566822 counting only the distinct ones).

The product of its digits is 55296, while the sum is 40.

The square root of 1328618416 is about 36450.2183258208. The cubic root of 1328618416 is about 1099.3435245495.

The spelling of 1328618416 in words is "one billion, three hundred twenty-eight million, six hundred eighteen thousand, four hundred sixteen".