1329768090 has 80 divisors (see below), whose sum is σ = 4086415872. Its totient is φ = 303945696.

The previous prime is 1329768079. The next prime is 1329768091. The reversal of 1329768090 is 908679231.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is not an unprimeable number, because it can be changed into a prime (1329768091) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 111594 + ... + 122933.

Almost surely, 2^1329768090 is an apocalyptic number.

1329768090 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1329768090 is an abundant number, since it is smaller than the sum of its proper divisors (2756647782).

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

1329768090 is a wasteful number, since it uses less digits than its factorization.

1329768090 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 234553 (or 234544 counting only the distinct ones).

The product of its (nonzero) digits is 163296, while the sum is 45.

The square root of 1329768090 is about 36465.9853836421. The cubic root of 1329768090 is about 1099.6605260988.

The spelling of 1329768090 in words is "one billion, three hundred twenty-nine million, seven hundred sixty-eight thousand, ninety".