18479453 has 2 divisors, whose sum is σ = 18479454. Its totient is φ = 18479452.

The previous prime is 18479431. The next prime is 18479477. The reversal of 18479453 is 35497481.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 17656804 + 822649 = 4202^2 + 907^2 .

It is a cyclic number.

It is not a de Polignac number, because 18479453 - 2²² = 14285149 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 18479453.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18479353) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9239726 + 9239727.

It is an arithmetic number, because the mean of its divisors is an integer number (9239727).

Almost surely, 2^18479453 is an apocalyptic number.

It is an amenable number.

18479453 is a deficient number, since it is larger than the sum of its proper divisors (1).

18479453 is an equidigital number, since it uses as much as digits as its factorization.

18479453 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 120960, while the sum is 41.

The square root of 18479453 is about 4298.7734297122. The cubic root of 18479453 is about 264.3806730876.

The spelling of 18479453 in words is "eighteen million, four hundred seventy-nine thousand, four hundred fifty-three".