1178378 has 4 divisors (see below), whose sum is σ = 1767570. Its totient is φ = 589188.

The previous prime is 1178377. The next prime is 1178393. The reversal of 1178378 is 8738711.

1178378 is nontrivially palindromic in base 5.

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

It can be written as a sum of positive squares in only one way, i.e., 635209 + 543169 = 797^2 + 737^2 .

It is not an unprimeable number, because it can be changed into a prime (1178371) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 294593 + ... + 294596.

2^1178378 is an apocalyptic number.

1178378 is a deficient number, since it is larger than the sum of its proper divisors (589192).

1178378 is an equidigital number, since it uses as much as digits as its factorization.

1178378 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 589191.

The product of its digits is 9408, while the sum is 35.

The square root of 1178378 is about 1085.5312063686. The cubic root of 1178378 is about 105.6237401668.

The spelling of 1178378 in words is "one million, one hundred seventy-eight thousand, three hundred seventy-eight".