161841043 has 8 divisors (see below), whose sum is σ = 199189088. Its totient is φ = 128049984.

The previous prime is 161841023. The next prime is 161841067. The reversal of 161841043 is 340148161.

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 161841043 - 2⁵ = 161841011 is a prime.

It is not an unprimeable number, because it can be changed into a prime (161841023) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 889146 + ... + 889327.

It is an arithmetic number, because the mean of its divisors is an integer number (24898636).

Almost surely, 2^161841043 is an apocalyptic number.

161841043 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

161841043 is a deficient number, since it is larger than the sum of its proper divisors (37348045).

161841043 is a wasteful number, since it uses less digits than its factorization.

161841043 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1778493.

The product of its (nonzero) digits is 2304, while the sum is 28.

The square root of 161841043 is about 12721.6761081235. The cubic root of 161841043 is about 544.9578207124.

The spelling of 161841043 in words is "one hundred sixty-one million, eight hundred forty-one thousand, forty-three".