18916612 has 24 divisors (see below), whose sum is σ = 38892672. Its totient is φ = 7936800.

The previous prime is 18916589. The next prime is 18916619. The reversal of 18916612 is 21661981.

It is not an unprimeable number, because it can be changed into a prime (18916619) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15964 + ... + 17107.

It is an arithmetic number, because the mean of its divisors is an integer number (1620528).

Almost surely, 2^18916612 is an apocalyptic number.

It is an amenable number.

18916612 is an abundant number, since it is smaller than the sum of its proper divisors (19976060).

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

18916612 is a wasteful number, since it uses less digits than its factorization.

18916612 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33099 (or 33097 counting only the distinct ones).

The product of its digits is 5184, while the sum is 34.

The square root of 18916612 is about 4349.3231657351. The cubic root of 18916612 is about 266.4492192633.

The spelling of 18916612 in words is "eighteen million, nine hundred sixteen thousand, six hundred twelve".