161948441 has 8 divisors (see below), whose sum is σ = 167891520. Its totient is φ = 156029328.

The previous prime is 161948431. The next prime is 161948453. The reversal of 161948441 is 144849161.

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 161948441 - 2⁶ = 161948377 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 161948395 and 161948404.

It is not an unprimeable number, because it can be changed into a prime (161948431) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8390 + ... + 19856.

It is an arithmetic number, because the mean of its divisors is an integer number (20986440).

Almost surely, 2^161948441 is an apocalyptic number.

It is an amenable number.

161948441 is a deficient number, since it is larger than the sum of its proper divisors (5943079).

161948441 is a wasteful number, since it uses less digits than its factorization.

161948441 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11983.

The product of its digits is 27648, while the sum is 38.

The square root of 161948441 is about 12725.8964713689. The cubic root of 161948441 is about 545.0783390461.

The spelling of 161948441 in words is "one hundred sixty-one million, nine hundred forty-eight thousand, four hundred forty-one".