1329904806 has 16 divisors (see below), whose sum is σ = 2665986048. Its totient is φ = 442272200.

The previous prime is 1329904799. The next prime is 1329904811. The reversal of 1329904806 is 6084099231.

1329904806 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 254550 + ... + 259721.

It is an arithmetic number, because the mean of its divisors is an integer number (166624128).

Almost surely, 2^1329904806 is an apocalyptic number.

1329904806 is an abundant number, since it is smaller than the sum of its proper divisors (1336081242).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1329904806 is a wasteful number, since it uses less digits than its factorization.

1329904806 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 514707.

The product of its (nonzero) digits is 93312, while the sum is 42.

The square root of 1329904806 is about 36467.8599043048. The cubic root of 1329904806 is about 1099.6982108745.

The spelling of 1329904806 in words is "one billion, three hundred twenty-nine million, nine hundred four thousand, eight hundred six".