78789318 has 8 divisors (see below), whose sum is σ = 157578648. Its totient is φ = 26263104.

The previous prime is 78789313. The next prime is 78789379. The reversal of 78789318 is 81398787.

It is a sphenic number, since it is the product of 3 distinct primes.

78789318 is an admirable number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78789313) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6565771 + ... + 6565782.

It is an arithmetic number, because the mean of its divisors is an integer number (19697331).

Almost surely, 2^78789318 is an apocalyptic number.

78789318 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

78789318 is a wasteful number, since it uses less digits than its factorization.

78789318 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13131558.

The product of its digits is 677376, while the sum is 51.

The square root of 78789318 is about 8876.3347165370. The cubic root of 78789318 is about 428.7022673220.

It can be divided in two parts, 78 and 789318, that added together give a triangular number (789396 = T₁₂₅₆).

The spelling of 78789318 in words is "seventy-eight million, seven hundred eighty-nine thousand, three hundred eighteen".