194954563 has 2 divisors, whose sum is σ = 194954564. Its totient is φ = 194954562.

The previous prime is 194954533. The next prime is 194954579. The reversal of 194954563 is 365459491.

It is a strong prime.

It is an emirp because it is prime and its reverse (365459491) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 194954563 - 2⁵ = 194954531 is a prime.

It is not a weakly prime, because it can be changed into another prime (194954503) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 97477281 + 97477282.

It is an arithmetic number, because the mean of its divisors is an integer number (97477282).

Almost surely, 2^194954563 is an apocalyptic number.

194954563 is a deficient number, since it is larger than the sum of its proper divisors (1).

194954563 is an equidigital number, since it uses as much as digits as its factorization.

194954563 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 583200, while the sum is 46.

The square root of 194954563 is about 13962.6130434099. The cubic root of 194954563 is about 579.8439562380.

The spelling of 194954563 in words is "one hundred ninety-four million, nine hundred fifty-four thousand, five hundred sixty-three".