161922288319 has 8 divisors (see below), whose sum is σ = 185939470080. Its totient is φ = 139454602200.

The previous prime is 161922288299. The next prime is 161922288361. The reversal of 161922288319 is 913882229161.

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 161922288319 - 2¹¹ = 161922286271 is a prime.

It is a super-2 number, since 2×161922288319² (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 (161922288389) 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, 387373687 + ... + 387374104.

It is an arithmetic number, because the mean of its divisors is an integer number (23242433760).

Almost surely, 2^161922288319 is an apocalyptic number.

161922288319 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

161922288319 is a deficient number, since it is larger than the sum of its proper divisors (24017181761).

161922288319 is a wasteful number, since it uses less digits than its factorization.

161922288319 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 774747821.

The product of its digits is 746496, while the sum is 52.

It can be divided in two parts, 161922 and 288319, that added together give a square (450241 = 671²).

The spelling of 161922288319 in words is "one hundred sixty-one billion, nine hundred twenty-two million, two hundred eighty-eight thousand, three hundred nineteen".