1928416678 has 12 divisors (see below), whose sum is σ = 2915780868. Its totient is φ = 956495280.

The previous prime is 1928416663. The next prime is 1928416687. The reversal of 1928416678 is 8766148291.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 709450 + ... + 712162.

It is an arithmetic number, because the mean of its divisors is an integer number (242981739).

Almost surely, 2^1928416678 is an apocalyptic number.

1928416678 is a deficient number, since it is larger than the sum of its proper divisors (987364190).

1928416678 is an frugal number, since it uses more digits than its factorization.

1928416678 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5559 (or 2846 counting only the distinct ones).

The product of its digits is 1161216, while the sum is 52.

The square root of 1928416678 is about 43913.7413345754. The cubic root of 1928416678 is about 1244.7065060880.

The spelling of 1928416678 in words is "one billion, nine hundred twenty-eight million, four hundred sixteen thousand, six hundred seventy-eight".