163929109 has 2 divisors, whose sum is σ = 163929110. Its totient is φ = 163929108.

The previous prime is 163929089. The next prime is 163929149. The reversal of 163929109 is 901929361.

It is an a-pointer prime, because the next prime (163929149) can be obtained adding 163929109 to its sum of digits (40).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 160402225 + 3526884 = 12665^2 + 1878^2 .

It is a cyclic number.

It is not a de Polignac number, because 163929109 - 2²³ = 155540501 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (163929149) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 81964554 + 81964555.

It is an arithmetic number, because the mean of its divisors is an integer number (81964555).

Almost surely, 2^163929109 is an apocalyptic number.

It is an amenable number.

163929109 is a deficient number, since it is larger than the sum of its proper divisors (1).

163929109 is an equidigital number, since it uses as much as digits as its factorization.

163929109 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 26244, while the sum is 40.

The square root of 163929109 is about 12803.4803471556. The cubic root of 163929109 is about 547.2914869409.

The spelling of 163929109 in words is "one hundred sixty-three million, nine hundred twenty-nine thousand, one hundred nine".