163648173 has 16 divisors (see below), whose sum is σ = 235563776. Its totient is φ = 100457280.

The previous prime is 163648141. The next prime is 163648181. The reversal of 163648173 is 371846361.

It is not a de Polignac number, because 163648173 - 2⁵ = 163648141 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (163648193) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11436 + ... + 21402.

It is an arithmetic number, because the mean of its divisors is an integer number (14722736).

Almost surely, 2^163648173 is an apocalyptic number.

163648173 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

163648173 is a deficient number, since it is larger than the sum of its proper divisors (71915603).

163648173 is a wasteful number, since it uses less digits than its factorization.

163648173 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10404.

The product of its digits is 72576, while the sum is 39.

The square root of 163648173 is about 12792.5045632198. The cubic root of 163648173 is about 546.9786651394.

The spelling of 163648173 in words is "one hundred sixty-three million, six hundred forty-eight thousand, one hundred seventy-three".