161113443 has 8 divisors (see below), whose sum is σ = 214890000. Its totient is φ = 107372928.

The previous prime is 161113391. The next prime is 161113453. The reversal of 161113443 is 344311161.

161113443 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 not a de Polignac number, because 161113443 - 2⁸ = 161113187 is a prime.

It is not an unprimeable number, because it can be changed into a prime (161113453) 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, 4183 + ... + 18431.

It is an arithmetic number, because the mean of its divisors is an integer number (26861250).

Almost surely, 2^161113443 is an apocalyptic number.

161113443 is a deficient number, since it is larger than the sum of its proper divisors (53776557).

161113443 is a wasteful number, since it uses less digits than its factorization.

161113443 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18021.

The product of its digits is 864, while the sum is 24.

The square root of 161113443 is about 12693.0470337110. The cubic root of 161113443 is about 544.1399255741.

The spelling of 161113443 in words is "one hundred sixty-one million, one hundred thirteen thousand, four hundred forty-three".