1328913870 has 32 divisors (see below), whose sum is σ = 3204524160. Its totient is φ = 352695840.

The previous prime is 1328913829. The next prime is 1328913907. The reversal of 1328913870 is 783198231.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 98640 + ... + 111299.

It is an arithmetic number, because the mean of its divisors is an integer number (100141380).

Almost surely, 2^1328913870 is an apocalyptic number.

1328913870 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1328913870 is an abundant number, since it is smaller than the sum of its proper divisors (1875610290).

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

1328913870 is a wasteful number, since it uses less digits than its factorization.

1328913870 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 210160.

The product of its (nonzero) digits is 72576, while the sum is 42.

The square root of 1328913870 is about 36454.2709431968. The cubic root of 1328913870 is about 1099.4250080325.

The spelling of 1328913870 in words is "one billion, three hundred twenty-eight million, nine hundred thirteen thousand, eight hundred seventy".