18406353 has 16 divisors (see below), whose sum is σ = 28807040. Its totient is φ = 10233216.

The previous prime is 18406351. The next prime is 18406369. The reversal of 18406353 is 35360481.

It is not a de Polignac number, because 18406353 - 2¹ = 18406351 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 18406353.

It is not an unprimeable number, because it can be changed into a prime (18406351) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11068 + ... + 12621.

It is an arithmetic number, because the mean of its divisors is an integer number (1800440).

Almost surely, 2^18406353 is an apocalyptic number.

It is an amenable number.

18406353 is a deficient number, since it is larger than the sum of its proper divisors (10400687).

18406353 is a wasteful number, since it uses less digits than its factorization.

18406353 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23736.

The product of its (nonzero) digits is 8640, while the sum is 30.

The square root of 18406353 is about 4290.2625793767. The cubic root of 18406353 is about 264.0316049169.

The spelling of 18406353 in words is "eighteen million, four hundred six thousand, three hundred fifty-three".