163889292513 has 4 divisors (see below), whose sum is σ = 218519056688. Its totient is φ = 109259528340.

The previous prime is 163889292491. The next prime is 163889292529. The reversal of 163889292513 is 315292988361.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 163889292513 - 2⁶ = 163889292449 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (163889292533) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 27314882083 + ... + 27314882088.

It is an arithmetic number, because the mean of its divisors is an integer number (54629764172).

Almost surely, 2^163889292513 is an apocalyptic number.

It is an amenable number.

163889292513 is a deficient number, since it is larger than the sum of its proper divisors (54629764175).

163889292513 is an equidigital number, since it uses as much as digits as its factorization.

163889292513 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54629764174.

The product of its digits is 5598720, while the sum is 57.

The spelling of 163889292513 in words is "one hundred sixty-three billion, eight hundred eighty-nine million, two hundred ninety-two thousand, five hundred thirteen".