1826865 has 12 divisors (see below), whose sum is σ = 3166644. Its totient is φ = 974304.

The previous prime is 1826863. The next prime is 1826873. The reversal of 1826865 is 5686281.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 1354896 + 471969 = 1164^2 + 687^2 .

It is not a de Polignac number, because 1826865 - 2¹ = 1826863 is a prime.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

1826865 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (1826863) 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, 20254 + ... + 20343.

It is an arithmetic number, because the mean of its divisors is an integer number (263887).

2^1826865 is an apocalyptic number.

1826865 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1826865 is a deficient number, since it is larger than the sum of its proper divisors (1339779).

1826865 is a wasteful number, since it uses less digits than its factorization.

1826865 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40608 (or 40605 counting only the distinct ones).

The product of its digits is 23040, while the sum is 36.

The square root of 1826865 is about 1351.6156998200. The cubic root of 1826865 is about 122.2462329626.

The spelling of 1826865 in words is "one million, eight hundred twenty-six thousand, eight hundred sixty-five".