161841701 has 8 divisors (see below), whose sum is σ = 188452224. Its totient is φ = 136103760.

The previous prime is 161841697. The next prime is 161841703. The reversal of 161841701 is 107148161.

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 161841701 - 2² = 161841697 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161841703) 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, 217745 + ... + 218486.

It is an arithmetic number, because the mean of its divisors is an integer number (23556528).

Almost surely, 2^161841701 is an apocalyptic number.

It is an amenable number.

161841701 is a deficient number, since it is larger than the sum of its proper divisors (26610523).

161841701 is an equidigital number, since it uses as much as digits as its factorization.

161841701 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 436291.

The product of its (nonzero) digits is 1344, while the sum is 29.

The square root of 161841701 is about 12721.7019694693. The cubic root of 161841701 is about 544.9585592596.

Adding to 161841701 its reverse (107148161), we get a palindrome (268989862).

The spelling of 161841701 in words is "one hundred sixty-one million, eight hundred forty-one thousand, seven hundred one".