18379351 has 2 divisors, whose sum is σ = 18379352. Its totient is φ = 18379350.

The previous prime is 18379349. The next prime is 18379379. The reversal of 18379351 is 15397381.

It is a happy number.

It is a weak prime.

It is an emirp because it is prime and its reverse (15397381) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 18379351 - 2¹ = 18379349 is a prime.

Together with 18379349, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 18379351.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18379321) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9189675 + 9189676.

It is an arithmetic number, because the mean of its divisors is an integer number (9189676).

Almost surely, 2^18379351 is an apocalyptic number.

18379351 is a deficient number, since it is larger than the sum of its proper divisors (1).

18379351 is an equidigital number, since it uses as much as digits as its factorization.

18379351 is an evil number, because the sum of its binary digits is even.

The product of its digits is 22680, while the sum is 37.

The square root of 18379351 is about 4287.1145307771. The cubic root of 18379351 is about 263.9024308487.

The spelling of 18379351 in words is "eighteen million, three hundred seventy-nine thousand, three hundred fifty-one".