1329603645 has 32 divisors (see below), whose sum is σ = 2213798400. Its totient is φ = 680871744.

The previous prime is 1329603623. The next prime is 1329603647. The reversal of 1329603645 is 5463069231.

It is not a de Polignac number, because 1329603645 - 2¹³ = 1329595453 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1329603647) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 20586 + ... + 55524.

It is an arithmetic number, because the mean of its divisors is an integer number (69181200).

Almost surely, 2^1329603645 is an apocalyptic number.

1329603645 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1329603645 is a deficient number, since it is larger than the sum of its proper divisors (884194755).

1329603645 is a wasteful number, since it uses less digits than its factorization.

1329603645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35049.

The product of its (nonzero) digits is 116640, while the sum is 39.

The square root of 1329603645 is about 36463.7305414572. The cubic root of 1329603645 is about 1099.6151946030.

The spelling of 1329603645 in words is "one billion, three hundred twenty-nine million, six hundred three thousand, six hundred forty-five".