18083919 has 8 divisors (see below), whose sum is σ = 27556480. Its totient is φ = 10333656.

The previous prime is 18083909. The next prime is 18083921. The reversal of 18083919 is 91938081.

It is a happy number.

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

It is not a de Polignac number, because 18083919 - 2¹⁵ = 18051151 is a prime.

It is a super-2 number, since 2×18083919² = 654056252797122, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18083909) 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 7 ways as a sum of consecutive naturals, for example, 430549 + ... + 430590.

It is an arithmetic number, because the mean of its divisors is an integer number (3444560).

Almost surely, 2^18083919 is an apocalyptic number.

18083919 is a deficient number, since it is larger than the sum of its proper divisors (9472561).

18083919 is an equidigital number, since it uses as much as digits as its factorization.

18083919 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 861149.

The product of its (nonzero) digits is 15552, while the sum is 39.

The square root of 18083919 is about 4252.5191357594. The cubic root of 18083919 is about 262.4807858952.

The spelling of 18083919 in words is "eighteen million, eighty-three thousand, nine hundred nineteen".