161837 has 8 divisors (see below), whose sum is σ = 178080. Its totient is φ = 146160.

The previous prime is 161831. The next prime is 161839. The reversal of 161837 is 738161.

161837 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 cyclic number.

It is not a de Polignac number, because 161837 - 2⁶ = 161773 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 161837.

It is not an unprimeable number, because it can be changed into a prime (161831) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 662 + ... + 872.

It is an arithmetic number, because the mean of its divisors is an integer number (22260).

2¹⁶¹⁸³⁷ is an apocalyptic number.

It is an amenable number.

161837 is a deficient number, since it is larger than the sum of its proper divisors (16243).

161837 is a wasteful number, since it uses less digits than its factorization.

161837 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 283.

The product of its digits is 1008, while the sum is 26.

The square root of 161837 is about 402.2896966118. The cubic root of 161837 is about 54.4953282756.

Adding to 161837 its reverse (738161), we get a palindrome (899998).

It can be divided in two parts, 16 and 1837, that multiplied together give a palindrome (29392).

The spelling of 161837 in words is "one hundred sixty-one thousand, eight hundred thirty-seven".