161873314319 has 8 divisors (see below), whose sum is σ = 162318718800. Its totient is φ = 161428288000.

The previous prime is 161873314289. The next prime is 161873314321. The reversal of 161873314319 is 913413378161.

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

It is a cyclic number.

It is not a de Polignac number, because 161873314319 - 2¹² = 161873310223 is a prime.

It is a super-2 number, since 2×161873314319² (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 (161873314349) 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 7 ways as a sum of consecutive naturals, for example, 773669 + ... + 960369.

It is an arithmetic number, because the mean of its divisors is an integer number (20289839850).

Almost surely, 2^161873314319 is an apocalyptic number.

161873314319 is a deficient number, since it is larger than the sum of its proper divisors (445404481).

161873314319 is a wasteful number, since it uses less digits than its factorization.

161873314319 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 189081.

The product of its digits is 326592, while the sum is 47.

The spelling of 161873314319 in words is "one hundred sixty-one billion, eight hundred seventy-three million, three hundred fourteen thousand, three hundred nineteen".