161136183 has 32 divisors (see below), whose sum is σ = 255661056. Its totient is φ = 89261568.

The previous prime is 161136181. The next prime is 161136193. The reversal of 161136183 is 381631161.

It is not a de Polignac number, because 161136183 - 2¹ = 161136181 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 161136183.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161136181) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 9966 + ... + 20532.

It is an arithmetic number, because the mean of its divisors is an integer number (7989408).

Almost surely, 2^161136183 is an apocalyptic number.

161136183 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

161136183 is a deficient number, since it is larger than the sum of its proper divisors (94524873).

161136183 is a wasteful number, since it uses less digits than its factorization.

161136183 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10623.

The product of its digits is 2592, while the sum is 30.

The square root of 161136183 is about 12693.9427681079. The cubic root of 161136183 is about 544.1655248445.

The spelling of 161136183 in words is "one hundred sixty-one million, one hundred thirty-six thousand, one hundred eighty-three".