1378934 has 4 divisors (see below), whose sum is σ = 2068404. Its totient is φ = 689466.

The previous prime is 1378907. The next prime is 1378943. The reversal of 1378934 is 4398731.

It is a semiprime because it is the product of two primes.

It is a junction number, because it is equal to n+sod(n) for n = 1378894 and 1378903.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 344732 + ... + 344735.

It is an arithmetic number, because the mean of its divisors is an integer number (517101).

2^1378934 is an apocalyptic number.

1378934 is a deficient number, since it is larger than the sum of its proper divisors (689470).

1378934 is an equidigital number, since it uses as much as digits as its factorization.

1378934 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 689469.

The product of its digits is 18144, while the sum is 35.

The square root of 1378934 is about 1174.2802050618. The cubic root of 1378934 is about 111.3049537029.

The spelling of 1378934 in words is "one million, three hundred seventy-eight thousand, nine hundred thirty-four".