163003969 has 4 divisors (see below), whose sum is σ = 164446596. Its totient is φ = 161561344.

The previous prime is 163003957. The next prime is 163003999. The reversal of 163003969 is 969300361.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 969300361 = 191 ⋅5074871.

It can be written as a sum of positive squares in 2 ways, for example, as 45064369 + 117939600 = 6713^2 + 10860^2 .

It is a cyclic number.

It is not a de Polignac number, because 163003969 - 2⁹ = 163003457 is a prime.

It is a super-2 number, since 2×163003969² = 53140587819505922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (163003909) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 721144 + ... + 721369.

It is an arithmetic number, because the mean of its divisors is an integer number (41111649).

Almost surely, 2^163003969 is an apocalyptic number.

It is an amenable number.

163003969 is a deficient number, since it is larger than the sum of its proper divisors (1442627).

163003969 is a wasteful number, since it uses less digits than its factorization.

163003969 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1442626.

The product of its (nonzero) digits is 26244, while the sum is 37.

The square root of 163003969 is about 12767.3007718938. The cubic root of 163003969 is about 546.2599908106.

The spelling of 163003969 in words is "one hundred sixty-three million, three thousand, nine hundred sixty-nine".