1329923073 has 16 divisors (see below), whose sum is σ = 1885346496. Its totient is φ = 830991360.

The previous prime is 1329923041. The next prime is 1329923123. The reversal of 1329923073 is 3703299231.

It is not a de Polignac number, because 1329923073 - 2⁵ = 1329923041 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1329923003) 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, 41811 + ... + 66392.

It is an arithmetic number, because the mean of its divisors is an integer number (117834156).

Almost surely, 2^1329923073 is an apocalyptic number.

It is an amenable number.

1329923073 is a deficient number, since it is larger than the sum of its proper divisors (555423423).

1329923073 is a wasteful number, since it uses less digits than its factorization.

1329923073 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 108464.

The product of its (nonzero) digits is 61236, while the sum is 39.

The square root of 1329923073 is about 36468.1103568584. The cubic root of 1329923073 is about 1099.7032458452.

The spelling of 1329923073 in words is "one billion, three hundred twenty-nine million, nine hundred twenty-three thousand, seventy-three".