18768678 has 16 divisors (see below), whose sum is σ = 38246256. Its totient is φ = 6138080.

The previous prime is 18768653. The next prime is 18768679. The reversal of 18768678 is 87686781.

It is a self number, because there is not a number n which added to its sum of digits gives 18768678.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18768679) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 29193 + ... + 29828.

It is an arithmetic number, because the mean of its divisors is an integer number (2390391).

Almost surely, 2^18768678 is an apocalyptic number.

18768678 is an abundant number, since it is smaller than the sum of its proper divisors (19477578).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

18768678 is a wasteful number, since it uses less digits than its factorization.

18768678 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59079.

The product of its digits is 903168, while the sum is 51.

The square root of 18768678 is about 4332.2832317382. The cubic root of 18768678 is about 265.7528278498.

The spelling of 18768678 in words is "eighteen million, seven hundred sixty-eight thousand, six hundred seventy-eight".