161912206 has 8 divisors (see below), whose sum is σ = 245372400. Its totient is φ = 80121408.

The previous prime is 161912183. The next prime is 161912207. The reversal of 161912206 is 602219161.

161912206 is digitally balanced in base 2, 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 congruent number.

It is not an unprimeable number, because it can be changed into a prime (161912207) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 417106 + ... + 417493.

It is an arithmetic number, because the mean of its divisors is an integer number (30671550).

Almost surely, 2^161912206 is an apocalyptic number.

161912206 is a deficient number, since it is larger than the sum of its proper divisors (83460194).

161912206 is an equidigital number, since it uses as much as digits as its factorization.

161912206 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 834698.

The product of its (nonzero) digits is 1296, while the sum is 28.

The square root of 161912206 is about 12724.4727199205. The cubic root of 161912206 is about 545.0376833355.

The spelling of 161912206 in words is "one hundred sixty-one million, nine hundred twelve thousand, two hundred six".