18530395 has 16 divisors (see below), whose sum is σ = 24202080. Its totient is φ = 13538304.

The previous prime is 18530389. The next prime is 18530399. The reversal of 18530395 is 59303581.

It is not a de Polignac number, because 18530395 - 2⁵ = 18530363 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 18530395.

It is not an unprimeable number, because it can be changed into a prime (18530399) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4836 + ... + 7774.

It is an arithmetic number, because the mean of its divisors is an integer number (1512630).

Almost surely, 2^18530395 is an apocalyptic number.

18530395 is a deficient number, since it is larger than the sum of its proper divisors (5671685).

18530395 is a wasteful number, since it uses less digits than its factorization.

18530395 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3054.

The product of its (nonzero) digits is 16200, while the sum is 34.

The square root of 18530395 is about 4304.6945303935. The cubic root of 18530395 is about 264.6233881258.

The spelling of 18530395 in words is "eighteen million, five hundred thirty thousand, three hundred ninety-five".