18812119 has 2 divisors, whose sum is σ = 18812120. Its totient is φ = 18812118.

The previous prime is 18812117. The next prime is 18812177. The reversal of 18812119 is 91121881.

It is a weak prime.

It is an emirp because it is prime and its reverse (91121881) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 18812119 - 2¹ = 18812117 is a prime.

It is a super-2 number, since 2×18812119² = 707791642540322, which contains 22 as substring.

Together with 18812117, it forms a pair of twin primes.

It is equal to p_1199821 and since 18812119 and 1199821 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18812117) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9406059 + 9406060.

It is an arithmetic number, because the mean of its divisors is an integer number (9406060).

Almost surely, 2^18812119 is an apocalyptic number.

18812119 is a deficient number, since it is larger than the sum of its proper divisors (1).

18812119 is an equidigital number, since it uses as much as digits as its factorization.

18812119 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1152, while the sum is 31.

The square root of 18812119 is about 4337.2939720522. The cubic root of 18812119 is about 265.9577023969.

The spelling of 18812119 in words is "eighteen million, eight hundred twelve thousand, one hundred nineteen".