161395 has 12 divisors (see below), whose sum is σ = 210816. Its totient is φ = 118560.

The previous prime is 161387. The next prime is 161407. The reversal of 161395 is 593161.

161395 is nontrivially palindromic in base 12.

It is not a de Polignac number, because 161395 - 2³ = 161387 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 750 + ... + 940.

It is an arithmetic number, because the mean of its divisors is an integer number (17568).

2¹⁶¹³⁹⁵ is an apocalyptic number.

161395 is a deficient number, since it is larger than the sum of its proper divisors (49421).

161395 is a wasteful number, since it uses less digits than its factorization.

161395 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 222 (or 209 counting only the distinct ones).

The product of its digits is 810, while the sum is 25.

The square root of 161395 is about 401.7399656494. The cubic root of 161395 is about 54.4456715289.

The spelling of 161395 in words is "one hundred sixty-one thousand, three hundred ninety-five".