18454446 has 16 divisors (see below), whose sum is σ = 41010000. Its totient is φ = 6151464.

The previous prime is 18454427. The next prime is 18454451. The reversal of 18454446 is 64445481.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 18454446.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 170821 + ... + 170928.

It is an arithmetic number, because the mean of its divisors is an integer number (2563125).

Almost surely, 2^18454446 is an apocalyptic number.

18454446 is an abundant number, since it is smaller than the sum of its proper divisors (22555554).

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

18454446 is a wasteful number, since it uses less digits than its factorization.

18454446 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 341760 (or 341754 counting only the distinct ones).

The product of its digits is 61440, while the sum is 36.

The square root of 18454446 is about 4295.8638246574. The cubic root of 18454446 is about 264.2613630630.

The spelling of 18454446 in words is "eighteen million, four hundred fifty-four thousand, four hundred forty-six".