1930825 has 18 divisors (see below), whose sum is σ = 2598234. Its totient is φ = 1422720.

The previous prime is 1930823. The next prime is 1930879. The reversal of 1930825 is 5280391.

It can be written as a sum of positive squares in 9 ways, for example, as 840889 + 1089936 = 917^2 + 1044^2 .

It is not a de Polignac number, because 1930825 - 2¹ = 1930823 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1930793 and 1930802.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1930823) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 3997 + ... + 4453.

2^1930825 is an apocalyptic number.

It is an amenable number.

1930825 is a deficient number, since it is larger than the sum of its proper divisors (667409).

1930825 is a wasteful number, since it uses less digits than its factorization.

1930825 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 493 (or 475 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 28.

The square root of 1930825 is about 1389.5412912181. The cubic root of 1930825 is about 124.5224445162.

The spelling of 1930825 in words is "one million, nine hundred thirty thousand, eight hundred twenty-five".