78918323 has 16 divisors (see below), whose sum is σ = 88015200. Its totient is φ = 70156800.

The previous prime is 78918319. The next prime is 78918331. The reversal of 78918323 is 32381987.

It is a cyclic number.

It is not a de Polignac number, because 78918323 - 2² = 78918319 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (78918383) 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 15 ways as a sum of consecutive naturals, for example, 225953 + ... + 226301.

It is an arithmetic number, because the mean of its divisors is an integer number (5500950).

Almost surely, 2^78918323 is an apocalyptic number.

78918323 is a deficient number, since it is larger than the sum of its proper divisors (9096877).

78918323 is a wasteful number, since it uses less digits than its factorization.

78918323 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 758.

The product of its digits is 72576, while the sum is 41.

The square root of 78918323 is about 8883.5985388805. The cubic root of 78918323 is about 428.9361170391.

The spelling of 78918323 in words is "seventy-eight million, nine hundred eighteen thousand, three hundred twenty-three".