187841 has 4 divisors (see below), whose sum is σ = 196032. Its totient is φ = 179652.

The previous prime is 187823. The next prime is 187843. The reversal of 187841 is 148781.

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 a de Polignac number, because none of the positive numbers 2^k-187841 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (187843) 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, 4061 + ... + 4106.

It is an arithmetic number, because the mean of its divisors is an integer number (49008).

2¹⁸⁷⁸⁴¹ is an apocalyptic number.

It is an amenable number.

187841 is a deficient number, since it is larger than the sum of its proper divisors (8191).

187841 is an equidigital number, since it uses as much as digits as its factorization.

187841 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8190.

The product of its digits is 1792, while the sum is 29.

The square root of 187841 is about 433.4062759121. The cubic root of 187841 is about 57.2703886751.

Subtracting from 187841 its reverse (148781), we obtain a triangular number (39060 = T₂₇₉).

The spelling of 187841 in words is "one hundred eighty-seven thousand, eight hundred forty-one".