161134249 has 4 divisors (see below), whose sum is σ = 166332160. Its totient is φ = 155936340.

The previous prime is 161134243. The next prime is 161134261. The reversal of 161134249 is 942431161.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 161134249 - 2³ = 161134241 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (31), and also a Moran number because the ratio is a prime number: 5197879 = 161134249 / (1 + 6 + 1 + 1 + 3 + 4 + 2 + 4 + 9).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 161134249.

It is not an unprimeable number, because it can be changed into a prime (161134241) 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, 2598909 + ... + 2598970.

It is an arithmetic number, because the mean of its divisors is an integer number (41583040).

Almost surely, 2^161134249 is an apocalyptic number.

It is an amenable number.

161134249 is a deficient number, since it is larger than the sum of its proper divisors (5197911).

161134249 is an equidigital number, since it uses as much as digits as its factorization.

161134249 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5197910.

The product of its digits is 5184, while the sum is 31.

The square root of 161134249 is about 12693.8665898142. The cubic root of 161134249 is about 544.1633477619.

The spelling of 161134249 in words is "one hundred sixty-one million, one hundred thirty-four thousand, two hundred forty-nine".