78916318 has 16 divisors (see below), whose sum is σ = 127678320. Its totient is φ = 36366336.

The previous prime is 78916307. The next prime is 78916319. The reversal of 78916318 is 81361987.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78916319) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18021 + ... + 21967.

It is an arithmetic number, because the mean of its divisors is an integer number (7979895).

Almost surely, 2^78916318 is an apocalyptic number.

78916318 is a deficient number, since it is larger than the sum of its proper divisors (48762002).

78916318 is a wasteful number, since it uses less digits than its factorization.

78916318 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4731.

The product of its digits is 72576, while the sum is 43.

The square root of 78916318 is about 8883.4856897504. The cubic root of 78916318 is about 428.9324844894.

The spelling of 78916318 in words is "seventy-eight million, nine hundred sixteen thousand, three hundred eighteen".