161834830369 has 27 divisors (see below), whose sum is σ = 176746962609. Its totient is φ = 148154256360.

The previous prime is 161834830301. The next prime is 161834830441. The reversal of 161834830369 is 963038438161.

It is a happy number.

The square root of 161834830369 is 402287.

It is a perfect power (a square), and thus also a powerful number.

It is not a de Polignac number, because 161834830369 - 2⁹ = 161834829857 is a prime.

It is a super-2 number, since 2×161834830369² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (161834830669) 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 26 ways as a sum of consecutive naturals, for example, 236946702 + ... + 236947384.

Almost surely, 2^161834830369 is an apocalyptic number.

161834830369 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

161834830369 is the 402287-th square number.

161834830369 is the 201144-th centered octagonal number.

It is an amenable number.

161834830369 is a deficient number, since it is larger than the sum of its proper divisors (14912132240).

161834830369 is an frugal number, since it uses more digits than its factorization.

161834830369 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1466 (or 733 counting only the distinct ones).

The product of its (nonzero) digits is 2239488, while the sum is 52.

The spelling of 161834830369 in words is "one hundred sixty-one billion, eight hundred thirty-four million, eight hundred thirty thousand, three hundred sixty-nine".