1840001 has 8 divisors (see below), whose sum is σ = 1895400. Its totient is φ = 1785472.

The previous prime is 1839997. The next prime is 1840019. The reversal of 1840001 is 1000481.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 30976 + 1809025 = 176^2 + 1345^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1840001 - 2² = 1839997 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1840031) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7781 + ... + 8013.

It is an arithmetic number, because the mean of its divisors is an integer number (236925).

2^1840001 is an apocalyptic number.

It is an amenable number.

1840001 is a deficient number, since it is larger than the sum of its proper divisors (55399).

1840001 is a wasteful number, since it uses less digits than its factorization.

1840001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 435.

The product of its (nonzero) digits is 32, while the sum is 14.

The square root of 1840001 is about 1356.4663652299. The cubic root of 1840001 is about 122.5385357036.

Adding to 1840001 its reverse (1000481), we get a palindrome (2840482).

The spelling of 1840001 in words is "one million, eight hundred forty thousand, one".