161966448 has 60 divisors (see below), whose sum is σ = 518038768. Its totient is φ = 46275840.

The previous prime is 161966443. The next prime is 161966459. The reversal of 161966448 is 844669161.

161966448 is a `hidden beast` number, since 16 + 196 + 6 + 448 = 666.

161966448 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161966443) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 79333 + ... + 81348.

Almost surely, 2^161966448 is an apocalyptic number.

161966448 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

161966448 is an abundant number, since it is smaller than the sum of its proper divisors (356072320).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

161966448 is a wasteful number, since it uses less digits than its factorization.

161966448 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 160702 (or 160693 counting only the distinct ones).

The product of its digits is 248832, while the sum is 45.

The square root of 161966448 is about 12726.6039460651. The cubic root of 161966448 is about 545.0985406647.

The spelling of 161966448 in words is "one hundred sixty-one million, nine hundred sixty-six thousand, four hundred forty-eight".