18379349 has 2 divisors, whose sum is σ = 18379350. Its totient is φ = 18379348.

The previous prime is 18379321. The next prime is 18379351. The reversal of 18379349 is 94397381.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 16144324 + 2235025 = 4018^2 + 1495^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-18379349 is a prime.

Together with 18379351, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18379379) 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 as a sum of consecutive naturals, namely, 9189674 + 9189675.

It is an arithmetic number, because the mean of its divisors is an integer number (9189675).

Almost surely, 2^18379349 is an apocalyptic number.

It is an amenable number.

18379349 is a deficient number, since it is larger than the sum of its proper divisors (1).

18379349 is an equidigital number, since it uses as much as digits as its factorization.

18379349 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 163296, while the sum is 44.

The square root of 18379349 is about 4287.1142975200. The cubic root of 18379349 is about 263.9024212763.

The spelling of 18379349 in words is "eighteen million, three hundred seventy-nine thousand, three hundred forty-nine".