1878871 has 4 divisors (see below), whose sum is σ = 1901592. Its totient is φ = 1856152.

The previous prime is 1878869. The next prime is 1878883. The reversal of 1878871 is 1788781.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1788781 = 953 ⋅1877.

It is a cyclic number.

It is not a de Polignac number, because 1878871 - 2¹ = 1878869 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 (1878841) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11236 + ... + 11401.

It is an arithmetic number, because the mean of its divisors is an integer number (475398).

2^1878871 is an apocalyptic number.

1878871 is a deficient number, since it is larger than the sum of its proper divisors (22721).

1878871 is an equidigital number, since it uses as much as digits as its factorization.

1878871 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22720.

The product of its digits is 25088, while the sum is 40.

The square root of 1878871 is about 1370.7191543128. The cubic root of 1878871 is about 123.3954050022.

The spelling of 1878871 in words is "one million, eight hundred seventy-eight thousand, eight hundred seventy-one".