1813941 has 24 divisors (see below), whose sum is σ = 2831360. Its totient is φ = 1147608.

The previous prime is 1813939. The next prime is 1813943. The reversal of 1813941 is 1493181.

It is an interprime number because it is at equal distance from previous prime (1813939) and next prime (1813943).

It is not a de Polignac number, because 1813941 - 2¹ = 1813939 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1813943) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 14220 + ... + 14346.

2^1813941 is an apocalyptic number.

It is an amenable number.

1813941 is a deficient number, since it is larger than the sum of its proper divisors (1017419).

1813941 is a wasteful number, since it uses less digits than its factorization.

1813941 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 182 (or 153 counting only the distinct ones).

The product of its digits is 864, while the sum is 27.

The square root of 1813941 is about 1346.8262694201. The cubic root of 1813941 is about 121.9572769872.

The spelling of 1813941 in words is "one million, eight hundred thirteen thousand, nine hundred forty-one".