1804131 has 18 divisors (see below), whose sum is σ = 3032172. Its totient is φ = 1030680.

The previous prime is 1804129. The next prime is 1804133. The reversal of 1804131 is 1314081.

It is an interprime number because it is at equal distance from previous prime (1804129) and next prime (1804133).

It is not a de Polignac number, because 1804131 - 2¹ = 1804129 is a prime.

It is a super-2 number, since 2×1804131² = 6509777330322, which contains 22 as substring.

1804131 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (1804133) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 1605 + ... + 2486.

It is an arithmetic number, because the mean of its divisors is an integer number (168454).

2^1804131 is an apocalyptic number.

1804131 is a deficient number, since it is larger than the sum of its proper divisors (1228041).

1804131 is a wasteful number, since it uses less digits than its factorization.

1804131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4111 (or 4101 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 18.

The square root of 1804131 is about 1343.1794370076. The cubic root of 1804131 is about 121.7370265035.

The spelling of 1804131 in words is "one million, eight hundred four thousand, one hundred thirty-one".