1928693 has 4 divisors (see below), whose sum is σ = 2077068. Its totient is φ = 1780320.

The previous prime is 1928687. The next prime is 1928741. The reversal of 1928693 is 3968291.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 432964 + 1495729 = 658^2 + 1223^2 .

It is a cyclic number.

It is not a de Polignac number, because 1928693 - 2⁴ = 1928677 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1928623) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 74168 + ... + 74193.

It is an arithmetic number, because the mean of its divisors is an integer number (519267).

2^1928693 is an apocalyptic number.

1928693 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

1928693 is a deficient number, since it is larger than the sum of its proper divisors (148375).

1928693 is a wasteful number, since it uses less digits than its factorization.

1928693 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 148374.

The product of its digits is 23328, while the sum is 38.

The square root of 1928693 is about 1388.7739196860. The cubic root of 1928693 is about 124.4765954403.

The spelling of 1928693 in words is "one million, nine hundred twenty-eight thousand, six hundred ninety-three".