14786381 has 2 divisors, whose sum is σ = 14786382. Its totient is φ = 14786380.

The previous prime is 14786377. The next prime is 14786399. The reversal of 14786381 is 18368741.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9357481 + 5428900 = 3059^2 + 2330^2 .

It is an emirp because it is prime and its reverse (18368741) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 14786381 - 2² = 14786377 is a prime.

It is a super-2 number, since 2×14786381² = 437274126154322, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (14786081) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7393190 + 7393191.

It is an arithmetic number, because the mean of its divisors is an integer number (7393191).

Almost surely, 2^14786381 is an apocalyptic number.

It is an amenable number.

14786381 is a deficient number, since it is larger than the sum of its proper divisors (1).

14786381 is an equidigital number, since it uses as much as digits as its factorization.

14786381 is an evil number, because the sum of its binary digits is even.

The product of its digits is 32256, while the sum is 38.

The square root of 14786381 is about 3845.3063597066. The cubic root of 14786381 is about 245.4448726745. Note that the first 3 decimals are identical.

The spelling of 14786381 in words is "fourteen million, seven hundred eighty-six thousand, three hundred eighty-one".