1878144 has 64 divisors (see below), whose sum is σ = 5132640. Its totient is φ = 608256.

The previous prime is 1878139. The next prime is 1878181. The reversal of 1878144 is 4418781.

It is a tau number, because it is divible by the number of its divisors (64).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 25692 + ... + 25764.

2^1878144 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1878144, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2566320).

1878144 is an abundant number, since it is smaller than the sum of its proper divisors (3254496).

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

1878144 is an equidigital number, since it uses as much as digits as its factorization.

1878144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 157 (or 145 counting only the distinct ones).

The product of its digits is 7168, while the sum is 33.

The square root of 1878144 is about 1370.4539393938. The cubic root of 1878144 is about 123.3794876361.

The spelling of 1878144 in words is "one million, eight hundred seventy-eight thousand, one hundred forty-four".