161444135 has 8 divisors (see below), whose sum is σ = 198969216. Its totient is φ = 125664480.

The previous prime is 161444093. The next prime is 161444137. The reversal of 161444135 is 531444161.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 161444135 - 2¹⁰ = 161443111 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 161444098 and 161444107.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161444137) 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, 436151 + ... + 436520.

It is an arithmetic number, because the mean of its divisors is an integer number (24871152).

Almost surely, 2^161444135 is an apocalyptic number.

161444135 is a deficient number, since it is larger than the sum of its proper divisors (37525081).

161444135 is an equidigital number, since it uses as much as digits as its factorization.

161444135 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 872713.

The product of its digits is 5760, while the sum is 29.

The square root of 161444135 is about 12706.0668580013. The cubic root of 161444135 is about 544.5119610455.

Adding to 161444135 its reverse (531444161), we get a palindrome (692888296).

The spelling of 161444135 in words is "one hundred sixty-one million, four hundred forty-four thousand, one hundred thirty-five".