1928194645 has 32 divisors (see below), whose sum is σ = 2528612352. Its totient is φ = 1403039232.

The previous prime is 1928194607. The next prime is 1928194739. The reversal of 1928194645 is 5464918291.

It is a cyclic number.

It is not a de Polignac number, because 1928194645 - 2¹⁵ = 1928161877 is a prime.

It is a Duffinian 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 31 ways as a sum of consecutive naturals, for example, 1344849 + ... + 1346281.

It is an arithmetic number, because the mean of its divisors is an integer number (79019136).

Almost surely, 2^1928194645 is an apocalyptic number.

It is an amenable number.

1928194645 is a deficient number, since it is larger than the sum of its proper divisors (600417707).

1928194645 is a wasteful number, since it uses less digits than its factorization.

1928194645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1741.

The product of its digits is 622080, while the sum is 49.

The square root of 1928194645 is about 43911.2132034632. The cubic root of 1928194645 is about 1244.6587334723.

The spelling of 1928194645 in words is "one billion, nine hundred twenty-eight million, one hundred ninety-four thousand, six hundred forty-five".