1845481 has 4 divisors (see below), whose sum is σ = 2013264. Its totient is φ = 1677700.

The previous prime is 1845463. The next prime is 1845491.

1845481 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.

It is a cyclic number.

It is not a de Polignac number, because 1845481 - 2⁷ = 1845353 is a prime.

It is a super-2 number, since 2×1845481² = 6811600242722, which contains 22 as substring.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (1845421) 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, 83875 + ... + 83896.

It is an arithmetic number, because the mean of its divisors is an integer number (503316).

2^1845481 is an apocalyptic number.

1845481 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1845481 is a deficient number, since it is larger than the sum of its proper divisors (167783).

1845481 is a wasteful number, since it uses less digits than its factorization.

1845481 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 167782.

The product of its digits is 5120, while the sum is 31.

The square root of 1845481 is about 1358.4848177289. The cubic root of 1845481 is about 122.6600656433.

It can be divided in two parts, 184 and 5481, that added together give a palindrome (5665).

The spelling of 1845481 in words is "one million, eight hundred forty-five thousand, four hundred eighty-one".