1329428345 has 16 divisors (see below), whose sum is σ = 1823897088. Its totient is φ = 911267520.

The previous prime is 1329428341. The next prime is 1329428351. The reversal of 1329428345 is 5438249231.

It is not a de Polignac number, because 1329428345 - 2² = 1329428341 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1329428341) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 120032 + ... + 130638.

It is an arithmetic number, because the mean of its divisors is an integer number (113993568).

Almost surely, 2^1329428345 is an apocalyptic number.

It is an amenable number.

1329428345 is a deficient number, since it is larger than the sum of its proper divisors (494468743).

1329428345 is a wasteful number, since it uses less digits than its factorization.

1329428345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14200.

The product of its digits is 207360, while the sum is 41.

The square root of 1329428345 is about 36461.3267037830. The cubic root of 1329428345 is about 1099.5668666629.

The spelling of 1329428345 in words is "one billion, three hundred twenty-nine million, four hundred twenty-eight thousand, three hundred forty-five".