161008237 has 4 divisors (see below), whose sum is σ = 173393500. Its totient is φ = 148622976.

The previous prime is 161008231. The next prime is 161008247. The reversal of 161008237 is 732800161.

161008237 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 732800161 = 12113 ⋅60497.

It can be written as a sum of positive squares in 2 ways, for example, as 11655396 + 149352841 = 3414^2 + 12221^2 .

It is a cyclic number.

It is not a de Polignac number, because 161008237 - 2²⁷ = 26790509 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161008231) 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, 6192612 + ... + 6192637.

It is an arithmetic number, because the mean of its divisors is an integer number (43348375).

Almost surely, 2^161008237 is an apocalyptic number.

It is an amenable number.

161008237 is a deficient number, since it is larger than the sum of its proper divisors (12385263).

161008237 is a wasteful number, since it uses less digits than its factorization.

161008237 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12385262.

The product of its (nonzero) digits is 2016, while the sum is 28.

The square root of 161008237 is about 12688.9021195689. The cubic root of 161008237 is about 544.0214598747.

Adding to 161008237 its reverse (732800161), we get a palindrome (893808398).

The spelling of 161008237 in words is "one hundred sixty-one million, eight thousand, two hundred thirty-seven".