1878842 has 16 divisors (see below), whose sum is σ = 3296832. Its totient is φ = 786240.

The previous prime is 1878841. The next prime is 1878869. The reversal of 1878842 is 2488781.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 1878796 and 1878805.

It is not an unprimeable number, because it can be changed into a prime (1878841) 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, 959 + ... + 2162.

It is an arithmetic number, because the mean of its divisors is an integer number (206052).

2^1878842 is an apocalyptic number.

1878842 is a deficient number, since it is larger than the sum of its proper divisors (1417990).

1878842 is a wasteful number, since it uses less digits than its factorization.

1878842 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3173.

The product of its digits is 28672, while the sum is 38.

The square root of 1878842 is about 1370.7085758833. The cubic root of 1878842 is about 123.3947701377.

The spelling of 1878842 in words is "one million, eight hundred seventy-eight thousand, eight hundred forty-two".