78945158 has 8 divisors (see below), whose sum is σ = 122237760. Its totient is φ = 38199240.

The previous prime is 78945157. The next prime is 78945187. The reversal of 78945158 is 85154987.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78945151) 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, 636593 + ... + 636716.

It is an arithmetic number, because the mean of its divisors is an integer number (15279720).

Almost surely, 2^78945158 is an apocalyptic number.

78945158 is a deficient number, since it is larger than the sum of its proper divisors (43292602).

78945158 is a wasteful number, since it uses less digits than its factorization.

78945158 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1273342.

The product of its digits is 403200, while the sum is 47.

The square root of 78945158 is about 8885.1087781749. The cubic root of 78945158 is about 428.9847293083.

The spelling of 78945158 in words is "seventy-eight million, nine hundred forty-five thousand, one hundred fifty-eight".