1878394 has 8 divisors (see below), whose sum is σ = 3220128. Its totient is φ = 805020.

The previous prime is 1878389. The next prime is 1878403. The reversal of 1878394 is 4938781.

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

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, 67072 + ... + 67099.

It is an arithmetic number, because the mean of its divisors is an integer number (402516).

2^1878394 is an apocalyptic number.

1878394 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

1878394 is a deficient number, since it is larger than the sum of its proper divisors (1341734).

1878394 is a wasteful number, since it uses less digits than its factorization.

1878394 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 134180.

The product of its digits is 48384, while the sum is 40.

The square root of 1878394 is about 1370.5451470127. The cubic root of 1878394 is about 123.3849617466.

The spelling of 1878394 in words is "one million, eight hundred seventy-eight thousand, three hundred ninety-four".