18119419 has 8 divisors (see below), whose sum is σ = 18338432. Its totient is φ = 17902080.

The previous prime is 18119411. The next prime is 18119441. The reversal of 18119419 is 91491181.

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 18119419 - 2³ = 18119411 is a prime.

It is a super-2 number, since 2×18119419² = 656626689795122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18119411) 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, 42829 + ... + 43249.

It is an arithmetic number, because the mean of its divisors is an integer number (2292304).

Almost surely, 2^18119419 is an apocalyptic number.

18119419 is a deficient number, since it is larger than the sum of its proper divisors (219013).

18119419 is a wasteful number, since it uses less digits than its factorization.

18119419 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 837.

The product of its digits is 2592, while the sum is 34.

The square root of 18119419 is about 4256.6910858083. The cubic root of 18119419 is about 262.6524296855.

It can be divided in two parts, 181 and 19419, that added together give a square (19600 = 140²).

The spelling of 18119419 in words is "eighteen million, one hundred nineteen thousand, four hundred nineteen".