194909053 has 2 divisors, whose sum is σ = 194909054. Its totient is φ = 194909052.

The previous prime is 194909017. The next prime is 194909069. The reversal of 194909053 is 350909491.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 167262489 + 27646564 = 12933^2 + 5258^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-194909053 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 194908997 and 194909015.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (194909653) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 97454526 + 97454527.

It is an arithmetic number, because the mean of its divisors is an integer number (97454527).

Almost surely, 2^194909053 is an apocalyptic number.

It is an amenable number.

194909053 is a deficient number, since it is larger than the sum of its proper divisors (1).

194909053 is an equidigital number, since it uses as much as digits as its factorization.

194909053 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 43740, while the sum is 40.

The square root of 194909053 is about 13960.9832390129. The cubic root of 194909053 is about 579.7988333272.

The spelling of 194909053 in words is "one hundred ninety-four million, nine hundred nine thousand, fifty-three".