1329940945 has 8 divisors (see below), whose sum is σ = 1596577320. Its totient is φ = 1063520640.

The previous prime is 1329940943. The next prime is 1329940949. The reversal of 1329940945 is 5490499231.

It can be written as a sum of positive squares in 4 ways, for example, as 1411344 + 1328529601 = 1188^2 + 36449^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1329940945 - 2¹ = 1329940943 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1329940895 and 1329940904.

It is not an unprimeable number, because it can be changed into a prime (1329940943) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 40150 + ... + 65359.

It is an arithmetic number, because the mean of its divisors is an integer number (199572165).

Almost surely, 2^1329940945 is an apocalyptic number.

It is an amenable number.

1329940945 is a deficient number, since it is larger than the sum of its proper divisors (266636375).

1329940945 is a wasteful number, since it uses less digits than its factorization.

1329940945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 108035.

The product of its (nonzero) digits is 349920, while the sum is 46.

The square root of 1329940945 is about 36468.3553920382. The cubic root of 1329940945 is about 1099.7081718966.

The spelling of 1329940945 in words is "one billion, three hundred twenty-nine million, nine hundred forty thousand, nine hundred forty-five".