1868225 has 6 divisors (see below), whose sum is σ = 2316630. Its totient is φ = 1494560.

The previous prime is 1868201. The next prime is 1868231. The reversal of 1868225 is 5228681.

It can be written as a sum of positive squares in 3 ways, for example, as 80656 + 1787569 = 284^2 + 1337^2 .

It is not a de Polignac number, because 1868225 - 2⁸ = 1867969 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1868191 and 1868200.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 37340 + ... + 37389.

It is an arithmetic number, because the mean of its divisors is an integer number (386105).

2^1868225 is an apocalyptic number.

It is an amenable number.

1868225 is a deficient number, since it is larger than the sum of its proper divisors (448405).

1868225 is an equidigital number, since it uses as much as digits as its factorization.

1868225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74739 (or 74734 counting only the distinct ones).

The product of its digits is 7680, while the sum is 32.

The square root of 1868225 is about 1366.8302747598. The cubic root of 1868225 is about 123.1619037000.

The spelling of 1868225 in words is "one million, eight hundred sixty-eight thousand, two hundred twenty-five".