1329428941 has 16 divisors (see below), whose sum is σ = 1369478656. Its totient is φ = 1290110976.

The previous prime is 1329428939. The next prime is 1329428983. The reversal of 1329428941 is 1498249231.

It is a cyclic number.

It is not a de Polignac number, because 1329428941 - 2¹ = 1329428939 is a prime.

It is a Duffinian number.

It is a congruent 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, 2189860 + ... + 2190466.

It is an arithmetic number, because the mean of its divisors is an integer number (85592416).

Almost surely, 2^1329428941 is an apocalyptic number.

It is an amenable number.

1329428941 is a deficient number, since it is larger than the sum of its proper divisors (40049715).

1329428941 is an equidigital number, since it uses as much as digits as its factorization.

1329428941 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1108.

The product of its digits is 124416, while the sum is 43.

The square root of 1329428941 is about 36461.3348768253. The cubic root of 1329428941 is about 1099.5670309796.

The spelling of 1329428941 in words is "one billion, three hundred twenty-nine million, four hundred twenty-eight thousand, nine hundred forty-one".