1161378 has 40 divisors (see below), whose sum is σ = 2665872. Its totient is φ = 377784.

The previous prime is 1161371. The next prime is 1161397. The reversal of 1161378 is 8731611.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Curzon number.

It is a plaindrome in base 14.

It is not an unprimeable number, because it can be changed into a prime (1161371) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 10801 + ... + 10907.

2^1161378 is an apocalyptic number.

1161378 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1161378, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1332936).

1161378 is an abundant number, since it is smaller than the sum of its proper divisors (1504494).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1161378 is a wasteful number, since it uses less digits than its factorization.

1161378 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 188 (or 179 counting only the distinct ones).

The product of its digits is 1008, while the sum is 27.

The square root of 1161378 is about 1077.6724919937. The cubic root of 1161378 is about 105.1133469862.

Adding to 1161378 its reverse (8731611), we get a palindrome (9892989).

The spelling of 1161378 in words is "one million, one hundred sixty-one thousand, three hundred seventy-eight".