1841506 has 4 divisors (see below), whose sum is σ = 2762262. Its totient is φ = 920752.

The previous prime is 1841479. The next prime is 1841513. The reversal of 1841506 is 6051481.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 1134225 + 707281 = 1065^2 + 841^2 .

It is a super-2 number, since 2×1841506² = 6782288696072, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 460375 + ... + 460378.

2^1841506 is an apocalyptic number.

1841506 is a deficient number, since it is larger than the sum of its proper divisors (920756).

1841506 is an equidigital number, since it uses as much as digits as its factorization.

1841506 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 920755.

The product of its (nonzero) digits is 960, while the sum is 25.

The square root of 1841506 is about 1357.0210020482. The cubic root of 1841506 is about 122.5719360908.

Subtracting from 1841506 its sum of digits (25), we obtain a palindrome (1841481).

Adding to 1841506 its reverse (6051481), we get a palindrome (7892987).

The spelling of 1841506 in words is "one million, eight hundred forty-one thousand, five hundred six".