1813141 has 4 divisors (see below), whose sum is σ = 1977984. Its totient is φ = 1648300.

The previous prime is 1813139. The next prime is 1813157. The reversal of 1813141 is 1413181.

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 1813141 - 2¹ = 1813139 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1813121) 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, 82405 + ... + 82426.

It is an arithmetic number, because the mean of its divisors is an integer number (494496).

2^1813141 is an apocalyptic number.

1813141 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1813141 is a deficient number, since it is larger than the sum of its proper divisors (164843).

1813141 is a wasteful number, since it uses less digits than its factorization.

1813141 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 164842.

The product of its digits is 96, while the sum is 19.

The square root of 1813141 is about 1346.5292421630. The cubic root of 1813141 is about 121.9393454654.

The spelling of 1813141 in words is "one million, eight hundred thirteen thousand, one hundred forty-one".