161963446 has 8 divisors (see below), whose sum is σ = 245675160. Its totient is φ = 80071728.

The previous prime is 161963441. The next prime is 161963453. The reversal of 161963446 is 644369161.

161963446 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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

It is a junction number, because it is equal to n+sod(n) for n = 161963399 and 161963408.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161963441) 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 3 ways as a sum of consecutive naturals, for example, 454776 + ... + 455131.

It is an arithmetic number, because the mean of its divisors is an integer number (30709395).

Almost surely, 2^161963446 is an apocalyptic number.

161963446 is a deficient number, since it is larger than the sum of its proper divisors (83711714).

161963446 is an equidigital number, since it uses as much as digits as its factorization.

161963446 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 909998.

The product of its digits is 93312, while the sum is 40.

The square root of 161963446 is about 12726.4860036068. The cubic root of 161963446 is about 545.0951728973.

It can be divided in two parts, 161963 and 446, that added together give a square (162409 = 403²).

The spelling of 161963446 in words is "one hundred sixty-one million, nine hundred sixty-three thousand, four hundred forty-six".