163279393 has 2 divisors, whose sum is σ = 163279394. Its totient is φ = 163279392.

The previous prime is 163279381. The next prime is 163279423. The reversal of 163279393 is 393972361.

163279393 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 107806689 + 55472704 = 10383^2 + 7448^2 .

It is a cyclic number.

It is not a de Polignac number, because 163279393 - 2¹³ = 163271201 is a prime.

It is equal to p_9147958 and since 163279393 and 9147958 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (163279693) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 81639696 + 81639697.

It is an arithmetic number, because the mean of its divisors is an integer number (81639697).

Almost surely, 2^163279393 is an apocalyptic number.

It is an amenable number.

163279393 is a deficient number, since it is larger than the sum of its proper divisors (1).

163279393 is an equidigital number, since it uses as much as digits as its factorization.

163279393 is an evil number, because the sum of its binary digits is even.

The product of its digits is 183708, while the sum is 43.

The square root of 163279393 is about 12778.0825243853. The cubic root of 163279393 is about 546.5674852703.

The spelling of 163279393 in words is "one hundred sixty-three million, two hundred seventy-nine thousand, three hundred ninety-three".