163138979309 has 8 divisors (see below), whose sum is σ = 165358656000. Its totient is φ = 160923168432.

The previous prime is 163138979281. The next prime is 163138979329. The reversal of 163138979309 is 903979831361.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-163138979309 is a prime.

It is a super-2 number, since 2×163138979309² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (163138979329) 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, 881429 + ... + 1050330.

It is an arithmetic number, because the mean of its divisors is an integer number (20669832000).

Almost surely, 2^163138979309 is an apocalyptic number.

It is an amenable number.

163138979309 is a deficient number, since it is larger than the sum of its proper divisors (2219676691).

163138979309 is a wasteful number, since it uses less digits than its factorization.

163138979309 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1932907.

The product of its (nonzero) digits is 6613488, while the sum is 59.

The spelling of 163138979309 in words is "one hundred sixty-three billion, one hundred thirty-eight million, nine hundred seventy-nine thousand, three hundred nine".