78950918 has 4 divisors (see below), whose sum is σ = 118426380. Its totient is φ = 39475458.

The previous prime is 78950917. The next prime is 78950939. The reversal of 78950918 is 81905987.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 81905987 = 41 ⋅1997707.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78950917) by changing a digit.

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 as a sum of consecutive naturals, namely, 19737728 + ... + 19737731.

It is an arithmetic number, because the mean of its divisors is an integer number (29606595).

Almost surely, 2^78950918 is an apocalyptic number.

78950918 is a deficient number, since it is larger than the sum of its proper divisors (39475462).

78950918 is a wasteful number, since it uses less digits than its factorization.

78950918 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39475461.

The product of its (nonzero) digits is 181440, while the sum is 47.

The square root of 78950918 is about 8885.4329101063. The cubic root of 78950918 is about 428.9951622553.

The spelling of 78950918 in words is "seventy-eight million, nine hundred fifty thousand, nine hundred eighteen".