1928913 has 16 divisors (see below), whose sum is σ = 3035136. Its totient is φ = 1066320.

The previous prime is 1928873. The next prime is 1928929. The reversal of 1928913 is 3198291.

It is not a de Polignac number, because 1928913 - 2⁹ = 1928401 is a prime.

1928913 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (1928963) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 831 + ... + 2132.

It is an arithmetic number, because the mean of its divisors is an integer number (189696).

2^1928913 is an apocalyptic number.

It is an amenable number.

1928913 is a deficient number, since it is larger than the sum of its proper divisors (1106223).

1928913 is a wasteful number, since it uses less digits than its factorization.

1928913 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3004.

The product of its digits is 3888, while the sum is 33.

The square root of 1928913 is about 1388.8531239840. The cubic root of 1928913 is about 124.4813281461.

The spelling of 1928913 in words is "one million, nine hundred twenty-eight thousand, nine hundred thirteen".