2081187 has 8 divisors (see below), whose sum is σ = 3083280. Its totient is φ = 1387440.

The previous prime is 2081171. The next prime is 2081237. The reversal of 2081187 is 7811802.

It is not a de Polignac number, because 2081187 - 2⁴ = 2081171 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 77081 = 2081187 / (2 + 0 + 8 + 1 + 1 + 8 + 7).

It is a self number, because there is not a number n which added to its sum of digits gives 2081187.

It is not an unprimeable number, because it can be changed into a prime (2081147) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 38514 + ... + 38567.

It is an arithmetic number, because the mean of its divisors is an integer number (385410).

2^2081187 is an apocalyptic number.

2081187 is a gapful number since it is divisible by the number (27) formed by its first and last digit.

2081187 is a deficient number, since it is larger than the sum of its proper divisors (1002093).

2081187 is an equidigital number, since it uses as much as digits as its factorization.

2081187 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77090 (or 77084 counting only the distinct ones).

The product of its (nonzero) digits is 896, while the sum is 27.

The square root of 2081187 is about 1442.6319696998. The cubic root of 2081187 is about 127.6743635154.

Adding to 2081187 its reverse (7811802), we get a palindrome (9892989).

The spelling of 2081187 in words is "two million, eighty-one thousand, one hundred eighty-seven".