163194653 has 2 divisors, whose sum is σ = 163194654. Its totient is φ = 163194652.

The previous prime is 163194623. The next prime is 163194659. The reversal of 163194653 is 356491361.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 113252164 + 49942489 = 10642^2 + 7067^2 .

It is a cyclic number.

It is not a de Polignac number, because 163194653 - 2²² = 159000349 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (163194659) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 81597326 + 81597327.

It is an arithmetic number, because the mean of its divisors is an integer number (81597327).

Almost surely, 2^163194653 is an apocalyptic number.

It is an amenable number.

163194653 is a deficient number, since it is larger than the sum of its proper divisors (1).

163194653 is an equidigital number, since it uses as much as digits as its factorization.

163194653 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 58320, while the sum is 38.

The square root of 163194653 is about 12774.7662600926. The cubic root of 163194653 is about 546.4729149703.

The spelling of 163194653 in words is "one hundred sixty-three million, one hundred ninety-four thousand, six hundred fifty-three".