163240157 has 2 divisors, whose sum is σ = 163240158. Its totient is φ = 163240156.

The previous prime is 163240127. The next prime is 163240183. The reversal of 163240157 is 751042361.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 98823481 + 64416676 = 9941^2 + 8026^2 .

It is an emirp because it is prime and its reverse (751042361) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 163240157 - 2¹⁰ = 163239133 is a prime.

It is a super-3 number, since 3×163240157³ (a number of 26 digits) contains 333 as substring.

It is equal to p_9145811 and since 163240157 and 9145811 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (163240117) 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, 81620078 + 81620079.

It is an arithmetic number, because the mean of its divisors is an integer number (81620079).

Almost surely, 2^163240157 is an apocalyptic number.

It is an amenable number.

163240157 is a deficient number, since it is larger than the sum of its proper divisors (1).

163240157 is an equidigital number, since it uses as much as digits as its factorization.

163240157 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5040, while the sum is 29.

The square root of 163240157 is about 12776.5471470190. The cubic root of 163240157 is about 546.5237017500.

The spelling of 163240157 in words is "one hundred sixty-three million, two hundred forty thousand, one hundred fifty-seven".