161235841 has 8 divisors (see below), whose sum is σ = 173746944. Its totient is φ = 148740240.

The previous prime is 161235829. The next prime is 161235847. The reversal of 161235841 is 148532161.

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

It is a cyclic number.

It is not a de Polignac number, because 161235841 - 2¹⁵ = 161203073 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (161235847) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26736 + ... + 32206.

It is an arithmetic number, because the mean of its divisors is an integer number (21718368).

Almost surely, 2^161235841 is an apocalyptic number.

It is an amenable number.

161235841 is a deficient number, since it is larger than the sum of its proper divisors (12511103).

161235841 is a wasteful number, since it uses less digits than its factorization.

161235841 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7751.

The product of its digits is 5760, while the sum is 31.

The square root of 161235841 is about 12697.8675768808. The cubic root of 161235841 is about 544.2776851939.

The spelling of 161235841 in words is "one hundred sixty-one million, two hundred thirty-five thousand, eight hundred forty-one".