1378833 has 4 divisors (see below), whose sum is σ = 1838448. Its totient is φ = 919220.

The previous prime is 1378831. The next prime is 1378841. The reversal of 1378833 is 3388731.

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, and also an emirpimes, since its reverse is a distinct semiprime: 3388731 = 3 ⋅1129577.

It is a cyclic number.

It is not a de Polignac number, because 1378833 - 2¹ = 1378831 is a prime.

It is a D-number.

1378833 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 1378794 and 1378803.

It is not an unprimeable number, because it can be changed into a prime (1378831) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 229803 + ... + 229808.

It is an arithmetic number, because the mean of its divisors is an integer number (459612).

2^1378833 is an apocalyptic number.

It is an amenable number.

1378833 is a deficient number, since it is larger than the sum of its proper divisors (459615).

1378833 is an equidigital number, since it uses as much as digits as its factorization.

1378833 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 459614.

The product of its digits is 12096, while the sum is 33.

The square root of 1378833 is about 1174.2371992064. The cubic root of 1378833 is about 111.3022361266.

It can be divided in two parts, 1378 and 833, that added together give a triangular number (2211 = T₆₆).

The spelling of 1378833 in words is "one million, three hundred seventy-eight thousand, eight hundred thirty-three".