194570447 has 2 divisors, whose sum is σ = 194570448. Its totient is φ = 194570446.

The previous prime is 194570429. The next prime is 194570449. The reversal of 194570447 is 744075491.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-194570447 is a prime.

Together with 194570449, 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 (194570449) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 97285223 + 97285224.

It is an arithmetic number, because the mean of its divisors is an integer number (97285224).

Almost surely, 2^194570447 is an apocalyptic number.

194570447 is a deficient number, since it is larger than the sum of its proper divisors (1).

194570447 is an equidigital number, since it uses as much as digits as its factorization.

194570447 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 141120, while the sum is 41.

The square root of 194570447 is about 13948.8510996426. The cubic root of 194570447 is about 579.4628866241.

The spelling of 194570447 in words is "one hundred ninety-four million, five hundred seventy thousand, four hundred forty-seven".