163404893 has 12 divisors (see below), whose sum is σ = 168200448. Its totient is φ = 158706240.

The previous prime is 163404889. The next prime is 163404911. The reversal of 163404893 is 398404361.

It is not a de Polignac number, because 163404893 - 2² = 163404889 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 (163404823) 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 11 ways as a sum of consecutive naturals, for example, 855428 + ... + 855618.

It is an arithmetic number, because the mean of its divisors is an integer number (14016704).

Almost surely, 2^163404893 is an apocalyptic number.

It is an amenable number.

163404893 is a deficient number, since it is larger than the sum of its proper divisors (4795555).

163404893 is an equidigital number, since it uses as much as digits as its factorization.

163404893 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 484 (or 371 counting only the distinct ones).

The product of its (nonzero) digits is 62208, while the sum is 38.

The square root of 163404893 is about 12782.9923335657. The cubic root of 163404893 is about 546.7074838566.

The spelling of 163404893 in words is "one hundred sixty-three million, four hundred four thousand, eight hundred ninety-three".