1329797088 has 144 divisors (see below), whose sum is σ = 4057588080. Its totient is φ = 427908096.

The previous prime is 1329797087. The next prime is 1329797101. The reversal of 1329797088 is 8807979231.

It is a tau number, because it is divible by the number of its divisors (144).

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1329797087) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 222556 + ... + 228452.

It is an arithmetic number, because the mean of its divisors is an integer number (28177695).

Almost surely, 2^1329797088 is an apocalyptic number.

1329797088 is a gapful number since it is divisible by the number (18) 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 1329797088, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2028794040).

1329797088 is an abundant number, since it is smaller than the sum of its proper divisors (2727790992).

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

1329797088 is an equidigital number, since it uses as much as digits as its factorization.

1329797088 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5951 (or 5931 counting only the distinct ones).

The product of its (nonzero) digits is 1524096, while the sum is 54.

The square root of 1329797088 is about 36466.3829848807. The cubic root of 1329797088 is about 1099.6685194034.

The spelling of 1329797088 in words is "one billion, three hundred twenty-nine million, seven hundred ninety-seven thousand, eighty-eight".