1378349 has 4 divisors (see below), whose sum is σ = 1575264. Its totient is φ = 1181436.

The previous prime is 1378339. The next prime is 1378373. The reversal of 1378349 is 9438731.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1378349 - 2¹⁶ = 1312813 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1378319) 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, 98447 + ... + 98460.

It is an arithmetic number, because the mean of its divisors is an integer number (393816).

2^1378349 is an apocalyptic number.

It is an amenable number.

1378349 is a deficient number, since it is larger than the sum of its proper divisors (196915).

1378349 is an equidigital number, since it uses as much as digits as its factorization.

1378349 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 196914.

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

The square root of 1378349 is about 1174.0310898779. The cubic root of 1378349 is about 111.2892114440.

The spelling of 1378349 in words is "one million, three hundred seventy-eight thousand, three hundred forty-nine".