13944618 has 48 divisors (see below), whose sum is σ = 31539456. Its totient is φ = 4449120.

The previous prime is 13944617. The next prime is 13944629. The reversal of 13944618 is 81644931.

13944618 is a `hidden beast` number, since 1 + 39 + 4 + 4 + 618 = 666.

13944618 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (13944617) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 44683 + ... + 44993.

It is an arithmetic number, because the mean of its divisors is an integer number (657072).

Almost surely, 2^13944618 is an apocalyptic number.

13944618 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

13944618 is an abundant number, since it is smaller than the sum of its proper divisors (17594838).

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

13944618 is a wasteful number, since it uses less digits than its factorization.

13944618 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 419 (or 416 counting only the distinct ones).

The product of its digits is 20736, while the sum is 36.

The square root of 13944618 is about 3734.2493221530. The cubic root of 13944618 is about 240.6960004794.

The spelling of 13944618 in words is "thirteen million, nine hundred forty-four thousand, six hundred eighteen".