163948469 has 2 divisors, whose sum is σ = 163948470. Its totient is φ = 163948468.

The previous prime is 163948457. The next prime is 163948483. The reversal of 163948469 is 964849361.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 83631025 + 80317444 = 9145^2 + 8962^2 .

It is a cyclic number.

It is not a de Polignac number, because 163948469 - 2⁴ = 163948453 is a prime.

It is a super-2 number, since 2×163948469² = 53758200974887922, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (163945469) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 81974234 + 81974235.

It is an arithmetic number, because the mean of its divisors is an integer number (81974235).

Almost surely, 2^163948469 is an apocalyptic number.

It is an amenable number.

163948469 is a deficient number, since it is larger than the sum of its proper divisors (1).

163948469 is an equidigital number, since it uses as much as digits as its factorization.

163948469 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1119744, while the sum is 50.

The square root of 163948469 is about 12804.2363692647. The cubic root of 163948469 is about 547.3130311034.

The spelling of 163948469 in words is "one hundred sixty-three million, nine hundred forty-eight thousand, four hundred sixty-nine".