1836481 has 4 divisors (see below), whose sum is σ = 1916352. Its totient is φ = 1756612.

The previous prime is 1836479. The next prime is 1836511. The reversal of 1836481 is 1846381.

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 1836481 - 2¹ = 1836479 is a prime.

It is a super-2 number, since 2×1836481² = 6745324926722, which contains 22 as substring.

It is an Ulam number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1836451) 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, 39901 + ... + 39946.

It is an arithmetic number, because the mean of its divisors is an integer number (479088).

2^1836481 is an apocalyptic number.

It is an amenable number.

1836481 is a deficient number, since it is larger than the sum of its proper divisors (79871).

1836481 is an equidigital number, since it uses as much as digits as its factorization.

1836481 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79870.

The product of its digits is 4608, while the sum is 31.

The square root of 1836481 is about 1355.1682552362. The cubic root of 1836481 is about 122.4603453488.

The spelling of 1836481 in words is "one million, eight hundred thirty-six thousand, four hundred eighty-one".