163326949 has 2 divisors, whose sum is σ = 163326950. Its totient is φ = 163326948.

The previous prime is 163326931. The next prime is 163327009. The reversal of 163326949 is 949623361.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 161417025 + 1909924 = 12705^2 + 1382^2 .

It is a cyclic number.

It is not a de Polignac number, because 163326949 - 2⁹ = 163326437 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (163326929) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 81663474 + 81663475.

It is an arithmetic number, because the mean of its divisors is an integer number (81663475).

Almost surely, 2^163326949 is an apocalyptic number.

It is an amenable number.

163326949 is a deficient number, since it is larger than the sum of its proper divisors (1).

163326949 is an equidigital number, since it uses as much as digits as its factorization.

163326949 is an evil number, because the sum of its binary digits is even.

The product of its digits is 209952, while the sum is 43.

The square root of 163326949 is about 12779.9432314858. The cubic root of 163326949 is about 546.6205436911.

It can be divided in two parts, 1633 and 26949, that added together give a palindrome (28582).

The spelling of 163326949 in words is "one hundred sixty-three million, three hundred twenty-six thousand, nine hundred forty-nine".