1878866 has 16 divisors (see below), whose sum is σ = 3151008. Its totient is φ = 832800.

The previous prime is 1878841. The next prime is 1878869. The reversal of 1878866 is 6688781.

It is not an unprimeable number, because it can be changed into a prime (1878869) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 140 + ... + 1943.

It is an arithmetic number, because the mean of its divisors is an integer number (196938).

2^1878866 is an apocalyptic number.

1878866 is a deficient number, since it is larger than the sum of its proper divisors (1272142).

1878866 is a wasteful number, since it uses less digits than its factorization.

1878866 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2137.

The product of its digits is 129024, while the sum is 44.

The square root of 1878866 is about 1370.7173304515. The cubic root of 1878866 is about 123.3952955432.

It can be divided in two parts, 1878 and 866, that added together give a cube (2744 = 14³).

The spelling of 1878866 in words is "one million, eight hundred seventy-eight thousand, eight hundred sixty-six".