161280466 has 4 divisors (see below), whose sum is σ = 241920702. Its totient is φ = 80640232.

The previous prime is 161280463. The next prime is 161280467. The reversal of 161280466 is 664082161.

161280466 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 154629225 + 6651241 = 12435^2 + 2579^2 .

It is a super-2 number, since 2×161280466² = 52022777426354312, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (161280463) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40320115 + ... + 40320118.

Almost surely, 2^161280466 is an apocalyptic number.

161280466 is a deficient number, since it is larger than the sum of its proper divisors (80640236).

161280466 is an equidigital number, since it uses as much as digits as its factorization.

161280466 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80640235.

The product of its (nonzero) digits is 13824, while the sum is 34.

The square root of 161280466 is about 12699.6246401222. The cubic root of 161280466 is about 544.3278935329.

The spelling of 161280466 in words is "one hundred sixty-one million, two hundred eighty thousand, four hundred sixty-six".