1931828 has 6 divisors (see below), whose sum is σ = 3380706. Its totient is φ = 965912.

The previous prime is 1931821. The next prime is 1931833. The reversal of 1931828 is 8281391.

It can be written as a sum of positive squares in only one way, i.e., 1909924 + 21904 = 1382^2 + 148^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1931794 and 1931803.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1931821) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 241475 + ... + 241482.

It is an arithmetic number, because the mean of its divisors is an integer number (563451).

2^1931828 is an apocalyptic number.

It is an amenable number.

1931828 is a deficient number, since it is larger than the sum of its proper divisors (1448878).

1931828 is a wasteful number, since it uses less digits than its factorization.

1931828 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 482961 (or 482959 counting only the distinct ones).

The product of its digits is 3456, while the sum is 32.

The square root of 1931828 is about 1389.9021548296. The cubic root of 1931828 is about 124.5440025534.

The spelling of 1931828 in words is "one million, nine hundred thirty-one thousand, eight hundred twenty-eight".