163818143709 has 8 divisors (see below), whose sum is σ = 238280936352. Its totient is φ = 99283723440.

The previous prime is 163818143633. The next prime is 163818143767. The reversal of 163818143709 is 907341818361.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 163818143709 - 2¹³ = 163818135517 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (163818143009) 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, 2482093054 + ... + 2482093119.

It is an arithmetic number, because the mean of its divisors is an integer number (29785117044).

Almost surely, 2^163818143709 is an apocalyptic number.

It is an amenable number.

163818143709 is a deficient number, since it is larger than the sum of its proper divisors (74462792643).

163818143709 is a wasteful number, since it uses less digits than its factorization.

163818143709 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4964186187.

The product of its (nonzero) digits is 870912, while the sum is 51.

The spelling of 163818143709 in words is "one hundred sixty-three billion, eight hundred eighteen million, one hundred forty-three thousand, seven hundred nine".