78849158 has 8 divisors (see below), whose sum is σ = 118701552. Its totient is φ = 39281976.

The previous prime is 78849139. The next prime is 78849163. The reversal of 78849158 is 85194887.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 70610 + ... + 71717.

It is an arithmetic number, because the mean of its divisors is an integer number (14837694).

Almost surely, 2^78849158 is an apocalyptic number.

78849158 is a deficient number, since it is larger than the sum of its proper divisors (39852394).

78849158 is a wasteful number, since it uses less digits than its factorization.

78849158 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 142606.

The product of its digits is 645120, while the sum is 50.

The square root of 78849158 is about 8879.7048374369. The cubic root of 78849158 is about 428.8107720977.

The spelling of 78849158 in words is "seventy-eight million, eight hundred forty-nine thousand, one hundred fifty-eight".