18295816 has 48 divisors (see below), whose sum is σ = 43543440. Its totient is φ = 7126560.

The previous prime is 18295807. The next prime is 18295867. The reversal of 18295816 is 61859281.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2191 + ... + 6433.

It is an arithmetic number, because the mean of its divisors is an integer number (907155).

Almost surely, 2^18295816 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 18295816, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21771720).

18295816 is an abundant number, since it is smaller than the sum of its proper divisors (25247624).

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

18295816 is a wasteful number, since it uses less digits than its factorization.

18295816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4274 (or 4263 counting only the distinct ones).

The product of its digits is 34560, while the sum is 40.

The square root of 18295816 is about 4277.3608685731. The cubic root of 18295816 is about 263.5020073372.

The spelling of 18295816 in words is "eighteen million, two hundred ninety-five thousand, eight hundred sixteen".