1840481 has 4 divisors (see below), whose sum is σ = 1843200. Its totient is φ = 1837764.

The previous prime is 1840469. The next prime is 1840493.

1840481 is nontrivially palindromic in base 10.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length.

It is an interprime number because it is at equal distance from previous prime (1840469) and next prime (1840493).

It is a cyclic number.

It is not a de Polignac number, because 1840481 - 2¹⁰ = 1839457 is a prime.

It is a super-2 number, since 2×1840481² = 6774740622722, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1840481.

It is not an unprimeable number, because it can be changed into a prime (1840441) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 560 + ... + 1998.

It is an arithmetic number, because the mean of its divisors is an integer number (460800).

2^1840481 is an apocalyptic number.

It is an amenable number.

1840481 is a deficient number, since it is larger than the sum of its proper divisors (2719).

1840481 is a wasteful number, since it uses less digits than its factorization.

1840481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2718.

The product of its (nonzero) digits is 1024, while the sum is 26.

The square root of 1840481 is about 1356.6432839918. The cubic root of 1840481 is about 122.5491902962.

The spelling of 1840481 in words is "one million, eight hundred forty thousand, four hundred eighty-one".