18710000447 has 2 divisors, whose sum is σ = 18710000448. Its totient is φ = 18710000446.

The previous prime is 18710000363. The next prime is 18710000453. The reversal of 18710000447 is 74400001781.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 18710000447 - 2⁸ = 18710000191 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18710000047) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9355000223 + 9355000224.

It is an arithmetic number, because the mean of its divisors is an integer number (9355000224).

Almost surely, 2^18710000447 is an apocalyptic number.

18710000447 is a deficient number, since it is larger than the sum of its proper divisors (1).

18710000447 is an equidigital number, since it uses as much as digits as its factorization.

18710000447 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6272, while the sum is 32.

The spelling of 18710000447 in words is "eighteen billion, seven hundred ten million, four hundred forty-seven", and thus it is an aban number.