18941359 has 2 divisors, whose sum is σ = 18941360. Its totient is φ = 18941358.

The previous prime is 18941357. The next prime is 18941387. The reversal of 18941359 is 95314981.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 18941359 - 2¹ = 18941357 is a prime.

Together with 18941357, 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 (18941357) 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, 9470679 + 9470680.

It is an arithmetic number, because the mean of its divisors is an integer number (9470680).

Almost surely, 2^18941359 is an apocalyptic number.

18941359 is a deficient number, since it is larger than the sum of its proper divisors (1).

18941359 is an equidigital number, since it uses as much as digits as its factorization.

18941359 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 38880, while the sum is 40.

The square root of 18941359 is about 4352.1671613117. The cubic root of 18941359 is about 266.5653596085.

The spelling of 18941359 in words is "eighteen million, nine hundred forty-one thousand, three hundred fifty-nine".