1329880361 has 2 divisors, whose sum is σ = 1329880362. Its totient is φ = 1329880360.

The previous prime is 1329880351. The next prime is 1329880397. The reversal of 1329880361 is 1630889231.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1315440361 + 14440000 = 36269^2 + 3800^2 .

It is an emirp because it is prime and its reverse (1630889231) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1329880361 - 2⁶ = 1329880297 is a prime.

It is not a weakly prime, because it can be changed into another prime (1329880351) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 664940180 + 664940181.

It is an arithmetic number, because the mean of its divisors is an integer number (664940181).

Almost surely, 2^1329880361 is an apocalyptic number.

It is an amenable number.

1329880361 is a deficient number, since it is larger than the sum of its proper divisors (1).

1329880361 is an equidigital number, since it uses as much as digits as its factorization.

1329880361 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 62208, while the sum is 41.

The square root of 1329880361 is about 36467.5247446272. The cubic root of 1329880361 is about 1099.6914729768.

The spelling of 1329880361 in words is "one billion, three hundred twenty-nine million, eight hundred eighty thousand, three hundred sixty-one".