1329094656 has 140 divisors (see below), whose sum is σ = 3972615372. Its totient is φ = 442810368.

The previous prime is 1329094639. The next prime is 1329094681. The reversal of 1329094656 is 6564909231.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 662551 + ... + 664553.

Almost surely, 2^1329094656 is an apocalyptic number.

1329094656 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1329094656, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1986307686).

1329094656 is an abundant number, since it is smaller than the sum of its proper divisors (2643520716).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1329094656 is an frugal number, since it uses more digits than its factorization.

1329094656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2041 (or 2008 counting only the distinct ones).

The product of its (nonzero) digits is 349920, while the sum is 45.

The square root of 1329094656 is about 36456.7504860211. The cubic root of 1329094656 is about 1099.4748611849.

The spelling of 1329094656 in words is "one billion, three hundred twenty-nine million, ninety-four thousand, six hundred fifty-six".