163601109 has 24 divisors (see below), whose sum is σ = 270433280. Its totient is φ = 93361248.

The previous prime is 163601107. The next prime is 163601117. The reversal of 163601109 is 901106361.

It is not a de Polignac number, because 163601109 - 2¹ = 163601107 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (163601107) 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 in 23 ways as a sum of consecutive naturals, for example, 67287 + ... + 69675.

Almost surely, 2^163601109 is an apocalyptic number.

It is an amenable number.

163601109 is a deficient number, since it is larger than the sum of its proper divisors (106832171).

163601109 is a wasteful number, since it uses less digits than its factorization.

163601109 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3489 (or 3486 counting only the distinct ones).

The product of its (nonzero) digits is 972, while the sum is 27.

The square root of 163601109 is about 12790.6649162583. The cubic root of 163601109 is about 546.9262244437.

The spelling of 163601109 in words is "one hundred sixty-three million, six hundred one thousand, one hundred nine".