1878994 has 8 divisors (see below), whose sum is σ = 3035340. Its totient is φ = 867216.

The previous prime is 1878991. The next prime is 1879049. The reversal of 1878994 is 4998781.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 1729225 + 149769 = 1315^2 + 387^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (1878991) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 36109 + ... + 36160.

2^1878994 is an apocalyptic number.

1878994 is a deficient number, since it is larger than the sum of its proper divisors (1156346).

1878994 is a wasteful number, since it uses less digits than its factorization.

1878994 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72284.

The product of its digits is 145152, while the sum is 46.

The square root of 1878994 is about 1370.7640205375. The cubic root of 1878994 is about 123.3980976304.

The spelling of 1878994 in words is "one million, eight hundred seventy-eight thousand, nine hundred ninety-four".