163135439 has 2 divisors, whose sum is σ = 163135440. Its totient is φ = 163135438.

The previous prime is 163135381. The next prime is 163135459. The reversal of 163135439 is 934531361.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-163135439 is a prime.

It is a super-2 number, since 2×163135439² = 53226342915445442, which contains 22 as substring.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 163135399 and 163135408.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (163135459) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 81567719 + 81567720.

It is an arithmetic number, because the mean of its divisors is an integer number (81567720).

Almost surely, 2^163135439 is an apocalyptic number.

163135439 is a deficient number, since it is larger than the sum of its proper divisors (1).

163135439 is an equidigital number, since it uses as much as digits as its factorization.

163135439 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 29160, while the sum is 35.

The square root of 163135439 is about 12772.4484340317. The cubic root of 163135439 is about 546.4068123926.

The spelling of 163135439 in words is "one hundred sixty-three million, one hundred thirty-five thousand, four hundred thirty-nine".