18328953 has 16 divisors (see below), whose sum is σ = 25758720. Its totient is φ = 11570064.

The previous prime is 18328951. The next prime is 18328969. The reversal of 18328953 is 35982381.

It is not a de Polignac number, because 18328953 - 2¹ = 18328951 is a prime.

It is not an unprimeable number, because it can be changed into a prime (18328951) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5818 + ... + 8396.

It is an arithmetic number, because the mean of its divisors is an integer number (1609920).

Almost surely, 2^18328953 is an apocalyptic number.

It is an amenable number.

18328953 is a deficient number, since it is larger than the sum of its proper divisors (7429767).

18328953 is a wasteful number, since it uses less digits than its factorization.

18328953 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2708.

The product of its digits is 51840, while the sum is 39.

The square root of 18328953 is about 4281.2326495999. The cubic root of 18328953 is about 263.6609945027.

The spelling of 18328953 in words is "eighteen million, three hundred twenty-eight thousand, nine hundred fifty-three".