78496918 has 16 divisors (see below), whose sum is σ = 120347136. Its totient is φ = 38390760.

The previous prime is 78496889. The next prime is 78496931. The reversal of 78496918 is 81969487.

It is a happy number.

It is a super-2 number, since 2×78496918² = 12323532270997448, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 14803 + ... + 19393.

It is an arithmetic number, because the mean of its divisors is an integer number (7521696).

Almost surely, 2^78496918 is an apocalyptic number.

78496918 is a deficient number, since it is larger than the sum of its proper divisors (41850218).

78496918 is a wasteful number, since it uses less digits than its factorization.

78496918 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4779.

The product of its digits is 870912, while the sum is 52.

The square root of 78496918 is about 8859.8486443054. The cubic root of 78496918 is about 428.1712819271.

The spelling of 78496918 in words is "seventy-eight million, four hundred ninety-six thousand, nine hundred eighteen".