18141251 has 2 divisors, whose sum is σ = 18141252. Its totient is φ = 18141250.

The previous prime is 18141239. The next prime is 18141283. The reversal of 18141251 is 15214181.

It is a weak prime.

It is an emirp because it is prime and its reverse (15214181) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 18141251 - 2⁶ = 18141187 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (18147251) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9070625 + 9070626.

It is an arithmetic number, because the mean of its divisors is an integer number (9070626).

Almost surely, 2^18141251 is an apocalyptic number.

18141251 is a deficient number, since it is larger than the sum of its proper divisors (1).

18141251 is an equidigital number, since it uses as much as digits as its factorization.

18141251 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 320, while the sum is 23.

The square root of 18141251 is about 4259.2547470185. The cubic root of 18141251 is about 262.7578768917.

The spelling of 18141251 in words is "eighteen million, one hundred forty-one thousand, two hundred fifty-one".