1878864 has 40 divisors (see below), whose sum is σ = 5228832. Its totient is φ = 577920.

The previous prime is 1878841. The next prime is 1878869. The reversal of 1878864 is 4688781.

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 polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 882 + ... + 2129.

2^1878864 is an apocalyptic number.

It is an amenable number.

1878864 is an abundant number, since it is smaller than the sum of its proper divisors (3349968).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1878864 is a wasteful number, since it uses less digits than its factorization.

1878864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3035 (or 3029 counting only the distinct ones).

The product of its digits is 86016, while the sum is 42.

The square root of 1878864 is about 1370.7166009063. The cubic root of 1878864 is about 123.3952517596.

The spelling of 1878864 in words is "one million, eight hundred seventy-eight thousand, eight hundred sixty-four".