1938878 has 8 divisors (see below), whose sum is σ = 2923968. Its totient is φ = 964224.

The previous prime is 1938863. The next prime is 1938883. The reversal of 1938878 is 8788391.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2126 + ... + 2897.

It is an arithmetic number, because the mean of its divisors is an integer number (365496).

2^1938878 is an apocalyptic number.

1938878 is a deficient number, since it is larger than the sum of its proper divisors (985090).

1938878 is a wasteful number, since it uses less digits than its factorization.

1938878 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5218.

The product of its digits is 96768, while the sum is 44.

The square root of 1938878 is about 1392.4359949384. The cubic root of 1938878 is about 124.6953219738.

The spelling of 1938878 in words is "one million, nine hundred thirty-eight thousand, eight hundred seventy-eight".