18073746 has 16 divisors (see below), whose sum is σ = 40164000. Its totient is φ = 6024564.

The previous prime is 18073729. The next prime is 18073747. The reversal of 18073746 is 64737081.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 18073746.

It is not an unprimeable number, because it can be changed into a prime (18073747) 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, 167296 + ... + 167403.

It is an arithmetic number, because the mean of its divisors is an integer number (2510250).

Almost surely, 2^18073746 is an apocalyptic number.

18073746 is an abundant number, since it is smaller than the sum of its proper divisors (22090254).

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

18073746 is a wasteful number, since it uses less digits than its factorization.

18073746 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 334710 (or 334704 counting only the distinct ones).

The product of its (nonzero) digits is 28224, while the sum is 36.

The square root of 18073746 is about 4251.3228529482. The cubic root of 18073746 is about 262.4315576666.

The spelling of 18073746 in words is "eighteen million, seventy-three thousand, seven hundred forty-six".