1840865 has 16 divisors (see below), whose sum is σ = 2408448. Its totient is φ = 1342656.

The previous prime is 1840847. The next prime is 1840871. The reversal of 1840865 is 5680481.

It is a cyclic number.

It is not a de Polignac number, because 1840865 - 2¹⁴ = 1824481 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8144 + ... + 8366.

It is an arithmetic number, because the mean of its divisors is an integer number (150528).

2^1840865 is an apocalyptic number.

It is an amenable number.

1840865 is a deficient number, since it is larger than the sum of its proper divisors (567583).

1840865 is a wasteful number, since it uses less digits than its factorization.

1840865 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 368.

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

The square root of 1840865 is about 1356.7848023913. The cubic root of 1840865 is about 122.5577126366.

The spelling of 1840865 in words is "one million, eight hundred forty thousand, eight hundred sixty-five".