1378375 has 8 divisors (see below), whose sum is σ = 1720368. Its totient is φ = 1102600.

The previous prime is 1378373. The next prime is 1378387. The reversal of 1378375 is 5738731.

It is not a de Polignac number, because 1378375 - 2¹ = 1378373 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1378375.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1378373) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5389 + ... + 5638.

It is an arithmetic number, because the mean of its divisors is an integer number (215046).

2^1378375 is an apocalyptic number.

1378375 is a deficient number, since it is larger than the sum of its proper divisors (341993).

1378375 is an equidigital number, since it uses as much as digits as its factorization.

1378375 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11042 (or 11032 counting only the distinct ones).

The product of its digits is 17640, while the sum is 34.

The square root of 1378375 is about 1174.0421627863. The cubic root of 1378375 is about 111.2899111945.

The spelling of 1378375 in words is "one million, three hundred seventy-eight thousand, three hundred seventy-five".