18985119 has 8 divisors (see below), whose sum is σ = 25373952. Its totient is φ = 12626520.

The previous prime is 18985093. The next prime is 18985157. The reversal of 18985119 is 91158981.

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

It is not a de Polignac number, because 18985119 - 2⁷ = 18984991 is a prime.

It is a super-2 number, since 2×18985119² = 720869486888322, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18985319) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6049 + ... + 8634.

It is an arithmetic number, because the mean of its divisors is an integer number (3171744).

Almost surely, 2^18985119 is an apocalyptic number.

18985119 is a deficient number, since it is larger than the sum of its proper divisors (6388833).

18985119 is a wasteful number, since it uses less digits than its factorization.

18985119 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15117.

The product of its digits is 25920, while the sum is 42.

The square root of 18985119 is about 4357.1916414131. The cubic root of 18985119 is about 266.7704826684.

The spelling of 18985119 in words is "eighteen million, nine hundred eighty-five thousand, one hundred nineteen".