161396205 has 16 divisors (see below), whose sum is σ = 260521920. Its totient is φ = 85315328.

The previous prime is 161396197. The next prime is 161396219. The reversal of 161396205 is 502693161.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 161396205 - 2³ = 161396197 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 45915 + ... + 49304.

It is an arithmetic number, because the mean of its divisors is an integer number (16282620).

Almost surely, 2^161396205 is an apocalyptic number.

161396205 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

161396205 is a deficient number, since it is larger than the sum of its proper divisors (99125715).

161396205 is a wasteful number, since it uses less digits than its factorization.

161396205 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 95340.

The product of its (nonzero) digits is 9720, while the sum is 33.

The square root of 161396205 is about 12704.1806111217. The cubic root of 161396205 is about 544.4580702854.

The spelling of 161396205 in words is "one hundred sixty-one million, three hundred ninety-six thousand, two hundred five".