163375789 has 4 divisors (see below), whose sum is σ = 165344256. Its totient is φ = 161407324.

The previous prime is 163375783. The next prime is 163375799. The reversal of 163375789 is 987573361.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 987573361 = 389 ⋅2538749.

It is a cyclic number.

It is not a de Polignac number, because 163375789 - 2³ = 163375781 is a prime.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (163375781) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 984109 + ... + 984274.

It is an arithmetic number, because the mean of its divisors is an integer number (41336064).

Almost surely, 2^163375789 is an apocalyptic number.

It is an amenable number.

163375789 is a deficient number, since it is larger than the sum of its proper divisors (1968467).

163375789 is an equidigital number, since it uses as much as digits as its factorization.

163375789 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1968466.

The product of its digits is 952560, while the sum is 49.

The square root of 163375789 is about 12781.8538952689. The cubic root of 163375789 is about 546.6750239568.

The spelling of 163375789 in words is "one hundred sixty-three million, three hundred seventy-five thousand, seven hundred eighty-nine".