18618119 has 8 divisors (see below), whose sum is σ = 21105840. Its totient is φ = 16281216.

The previous prime is 18618101. The next prime is 18618133. The reversal of 18618119 is 91181681.

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

It is a cyclic number.

It is not a de Polignac number, because 18618119 - 2¹² = 18614023 is a prime.

It is a super-2 number, since 2×18618119² = 693268710196322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18618169) 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 7 ways as a sum of consecutive naturals, for example, 37442 + ... + 37935.

It is an arithmetic number, because the mean of its divisors is an integer number (2638230).

Almost surely, 2^18618119 is an apocalyptic number.

18618119 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

18618119 is a deficient number, since it is larger than the sum of its proper divisors (2487721).

18618119 is a wasteful number, since it uses less digits than its factorization.

18618119 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75409.

The product of its digits is 3456, while the sum is 35.

The square root of 18618119 is about 4314.8718405070. The cubic root of 18618119 is about 265.0403118928.

The spelling of 18618119 in words is "eighteen million, six hundred eighteen thousand, one hundred nineteen".