194954533 has 2 divisors, whose sum is σ = 194954534. Its totient is φ = 194954532.

The previous prime is 194954531. The next prime is 194954563. The reversal of 194954533 is 335459491.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 194686209 + 268324 = 13953^2 + 518^2 .

It is an emirp because it is prime and its reverse (335459491) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 194954533 - 2¹ = 194954531 is a prime.

Together with 194954531, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 194954533.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (194954531) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 97477266 + 97477267.

It is an arithmetic number, because the mean of its divisors is an integer number (97477267).

Almost surely, 2^194954533 is an apocalyptic number.

It is an amenable number.

194954533 is a deficient number, since it is larger than the sum of its proper divisors (1).

194954533 is an equidigital number, since it uses as much as digits as its factorization.

194954533 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 291600, while the sum is 43.

The square root of 194954533 is about 13962.6119691124. The cubic root of 194954533 is about 579.8439264955.

The spelling of 194954533 in words is "one hundred ninety-four million, nine hundred fifty-four thousand, five hundred thirty-three".