163897473 has 8 divisors (see below), whose sum is σ = 226065600. Its totient is φ = 105497168.

The previous prime is 163897463. The next prime is 163897529. The reversal of 163897473 is 374798361.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 163897473 - 2⁵ = 163897441 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (163897453) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 941853 + ... + 942026.

It is an arithmetic number, because the mean of its divisors is an integer number (28258200).

Almost surely, 2^163897473 is an apocalyptic number.

It is an amenable number.

163897473 is a deficient number, since it is larger than the sum of its proper divisors (62168127).

163897473 is a wasteful number, since it uses less digits than its factorization.

163897473 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1883911.

The product of its digits is 762048, while the sum is 48.

The square root of 163897473 is about 12802.2448422142. The cubic root of 163897473 is about 547.2562781698.

The spelling of 163897473 in words is "one hundred sixty-three million, eight hundred ninety-seven thousand, four hundred seventy-three".