1864825 has 12 divisors (see below), whose sum is σ = 2339260. Its totient is φ = 1474560.

The previous prime is 1864823. The next prime is 1864847. The reversal of 1864825 is 5284681.

It can be written as a sum of positive squares in 6 ways, for example, as 90601 + 1774224 = 301^2 + 1332^2 .

It is not a de Polignac number, because 1864825 - 2¹ = 1864823 is a prime.

1864825 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (1864823) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2041 + ... + 2809.

2^1864825 is an apocalyptic number.

It is an amenable number.

1864825 is a deficient number, since it is larger than the sum of its proper divisors (474435).

1864825 is an equidigital number, since it uses as much as digits as its factorization.

1864825 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 876 (or 871 counting only the distinct ones).

The product of its digits is 15360, while the sum is 34.

The square root of 1864825 is about 1365.5859548194. The cubic root of 1864825 is about 123.0871438327.

The spelling of 1864825 in words is "one million, eight hundred sixty-four thousand, eight hundred twenty-five".