163994153 has 2 divisors, whose sum is σ = 163994154. Its totient is φ = 163994152.

The previous prime is 163994143. The next prime is 163994161. The reversal of 163994153 is 351499361.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 158055184 + 5938969 = 12572^2 + 2437^2 .

It is a cyclic number.

It is not a de Polignac number, because 163994153 - 2¹⁰ = 163993129 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 163994153.

It is not a weakly prime, because it can be changed into another prime (163994143) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 81997076 + 81997077.

It is an arithmetic number, because the mean of its divisors is an integer number (81997077).

Almost surely, 2^163994153 is an apocalyptic number.

It is an amenable number.

163994153 is a deficient number, since it is larger than the sum of its proper divisors (1).

163994153 is an equidigital number, since it uses as much as digits as its factorization.

163994153 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 87480, while the sum is 41.

The square root of 163994153 is about 12806.0201858345. The cubic root of 163994153 is about 547.3638623730.

The spelling of 163994153 in words is "one hundred sixty-three million, nine hundred ninety-four thousand, one hundred fifty-three".