163249338779 has 4 divisors (see below), whose sum is σ = 163250561184. Its totient is φ = 163248116376.

The previous prime is 163249338773. The next prime is 163249338821. The reversal of 163249338779 is 977833942361.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 977833942361 = 276919 ⋅3531119.

It is a cyclic number.

It is not a de Polignac number, because 163249338779 - 2⁸ = 163249338523 is a prime.

It is a super-3 number, since 3×163249338779³ (a number of 35 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (163249338773) 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, 382307 + ... + 687500.

It is an arithmetic number, because the mean of its divisors is an integer number (40812640296).

Almost surely, 2^163249338779 is an apocalyptic number.

163249338779 is a deficient number, since it is larger than the sum of its proper divisors (1222405).

163249338779 is a wasteful number, since it uses less digits than its factorization.

163249338779 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1222404.

The product of its digits is 41150592, while the sum is 62.

The spelling of 163249338779 in words is "one hundred sixty-three billion, two hundred forty-nine million, three hundred thirty-eight thousand, seven hundred seventy-nine".