1178381678 has 16 divisors (see below), whose sum is σ = 1845154080. Its totient is φ = 563350656.

The previous prime is 1178381671. The next prime is 1178381681. The reversal of 1178381678 is 8761838711.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1178381671) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 214826 + ... + 220242.

It is an arithmetic number, because the mean of its divisors is an integer number (115322130).

Almost surely, 2^1178381678 is an apocalyptic number.

1178381678 is a deficient number, since it is larger than the sum of its proper divisors (666772402).

1178381678 is a wasteful number, since it uses less digits than its factorization.

1178381678 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10171.

The product of its digits is 451584, while the sum is 50.

The square root of 1178381678 is about 34327.5644052997. The cubic root of 1178381678 is about 1056.2385005902.

The spelling of 1178381678 in words is "one billion, one hundred seventy-eight million, three hundred eighty-one thousand, six hundred seventy-eight".