1928806408 has 16 divisors (see below), whose sum is σ = 3618340560. Its totient is φ = 963915600.

The previous prime is 1928806361. The next prime is 1928806447. The reversal of 1928806408 is 8046088291.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 43858 + ... + 76033.

It is an arithmetic number, because the mean of its divisors is an integer number (226146285).

Almost surely, 2^1928806408 is an apocalyptic number.

It is an amenable number.

1928806408 is a deficient number, since it is larger than the sum of its proper divisors (1689534152).

1928806408 is a wasteful number, since it uses less digits than its factorization.

1928806408 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 121908 (or 121904 counting only the distinct ones).

The product of its (nonzero) digits is 221184, while the sum is 46.

The square root of 1928806408 is about 43918.1785596807. The cubic root of 1928806408 is about 1244.7903515205.

The spelling of 1928806408 in words is "one billion, nine hundred twenty-eight million, eight hundred six thousand, four hundred eight".