163897471 has 8 divisors (see below), whose sum is σ = 171257184. Its totient is φ = 156557280.

The previous prime is 163897463. The next prime is 163897529. The reversal of 163897471 is 174798361.

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 163897471 - 2³ = 163897463 is a prime.

It is a super-3 number, since 3×163897471³ (a number of 26 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (163897421) 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, 13861 + ... + 22801.

It is an arithmetic number, because the mean of its divisors is an integer number (21407148).

Almost surely, 2^163897471 is an apocalyptic number.

163897471 is a deficient number, since it is larger than the sum of its proper divisors (7359713).

163897471 is an equidigital number, since it uses as much as digits as its factorization.

163897471 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9761.

The product of its digits is 254016, while the sum is 46.

The square root of 163897471 is about 12802.2447641029. The cubic root of 163897471 is about 547.2562759438.

The spelling of 163897471 in words is "one hundred sixty-three million, eight hundred ninety-seven thousand, four hundred seventy-one".