18449046 has 192 divisors, whose sum is σ = 56609280. Its totient is φ = 4354560.

The previous prime is 18449027. The next prime is 18449069. The reversal of 18449046 is 64094481.

It is a happy number.

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 18449046.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 636160 + ... + 636188.

It is an arithmetic number, because the mean of its divisors is an integer number (294840).

Almost surely, 2^18449046 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 18449046, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28304640).

18449046 is an abundant number, since it is smaller than the sum of its proper divisors (38160234).

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

18449046 is a wasteful number, since it uses less digits than its factorization.

18449046 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81 (or 69 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 36.

The square root of 18449046 is about 4295.2352671303. The cubic root of 18449046 is about 264.2355851633.

The spelling of 18449046 in words is "eighteen million, four hundred forty-nine thousand, forty-six".