161144843 has 4 divisors (see below), whose sum is σ = 162035328. Its totient is φ = 160254360.

The previous prime is 161144791. The next prime is 161144869. The reversal of 161144843 is 348441161.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 161144843 - 2⁸ = 161144587 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (161144143) 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, 444971 + ... + 445332.

It is an arithmetic number, because the mean of its divisors is an integer number (40508832).

Almost surely, 2^161144843 is an apocalyptic number.

161144843 is a deficient number, since it is larger than the sum of its proper divisors (890485).

161144843 is an equidigital number, since it uses as much as digits as its factorization.

161144843 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 890484.

The product of its digits is 9216, while the sum is 32.

The square root of 161144843 is about 12694.2838710973. The cubic root of 161144843 is about 544.1752730979.

The spelling of 161144843 in words is "one hundred sixty-one million, one hundred forty-four thousand, eight hundred forty-three".