1878868 has 6 divisors (see below), whose sum is σ = 3288026. Its totient is φ = 939432.

The previous prime is 1878841. The next prime is 1878869. The reversal of 1878868 is 8688781.

It can be written as a sum of positive squares in only one way, i.e., 1567504 + 311364 = 1252^2 + 558^2 .

It is a super-2 number, since 2×1878868² = 7060289922848, which contains 22 as substring.

It is a congruent number.

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 as a sum of consecutive naturals, namely, 234855 + ... + 234862.

2^1878868 is an apocalyptic number.

It is an amenable number.

1878868 is a deficient number, since it is larger than the sum of its proper divisors (1409158).

1878868 is a wasteful number, since it uses less digits than its factorization.

1878868 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 469721 (or 469719 counting only the distinct ones).

The product of its digits is 172032, while the sum is 46.

The square root of 1878868 is about 1370.7180599963. The cubic root of 1878868 is about 123.3953393268.

The spelling of 1878868 in words is "one million, eight hundred seventy-eight thousand, eight hundred sixty-eight".