163415885 has 4 divisors (see below), whose sum is σ = 196099068. Its totient is φ = 130732704.

The previous prime is 163415821. The next prime is 163415887. The reversal of 163415885 is 588514361.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 588514361 = 971 ⋅606091.

It can be written as a sum of positive squares in 2 ways, for example, as 45454564 + 117961321 = 6742^2 + 10861^2 .

It is a cyclic number.

It is not a de Polignac number, because 163415885 - 2⁶ = 163415821 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (163415887) 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, 16341584 + ... + 16341593.

It is an arithmetic number, because the mean of its divisors is an integer number (49024767).

Almost surely, 2^163415885 is an apocalyptic number.

It is an amenable number.

163415885 is a deficient number, since it is larger than the sum of its proper divisors (32683183).

163415885 is an equidigital number, since it uses as much as digits as its factorization.

163415885 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32683182.

The product of its digits is 115200, while the sum is 41.

The square root of 163415885 is about 12783.4222726154. The cubic root of 163415885 is about 546.7197423102.

The spelling of 163415885 in words is "one hundred sixty-three million, four hundred fifteen thousand, eight hundred eighty-five".