161385206 has 8 divisors (see below), whose sum is σ = 243020520. Its totient is φ = 80378368.

The previous prime is 161385197. The next prime is 161385209. The reversal of 161385206 is 602583161.

It is a happy number.

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 (161385209) 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, 156476 + ... + 157503.

It is an arithmetic number, because the mean of its divisors is an integer number (30377565).

Almost surely, 2^161385206 is an apocalyptic number.

161385206 is a deficient number, since it is larger than the sum of its proper divisors (81635314).

161385206 is a wasteful number, since it uses less digits than its factorization.

161385206 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 314238.

The product of its (nonzero) digits is 8640, while the sum is 32.

The square root of 161385206 is about 12703.7477147494. The cubic root of 161385206 is about 544.4457019022.

The spelling of 161385206 in words is "one hundred sixty-one million, three hundred eighty-five thousand, two hundred six".