18380395 has 8 divisors (see below), whose sum is σ = 24061680. Its totient is φ = 13367520.

The previous prime is 18380389. The next prime is 18380413. The reversal of 18380395 is 59308381.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 18380395 - 2¹⁹ = 17856107 is a prime.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 167040 + ... + 167149.

It is an arithmetic number, because the mean of its divisors is an integer number (3007710).

Almost surely, 2^18380395 is an apocalyptic number.

18380395 is a deficient number, since it is larger than the sum of its proper divisors (5681285).

18380395 is a wasteful number, since it uses less digits than its factorization.

18380395 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 334205.

The product of its (nonzero) digits is 25920, while the sum is 37.

The square root of 18380395 is about 4287.2362892661. The cubic root of 18380395 is about 263.9074275598.

The spelling of 18380395 in words is "eighteen million, three hundred eighty thousand, three hundred ninety-five".