161032793 has 4 divisors (see below), whose sum is σ = 162113700. Its totient is φ = 159951888.

The previous prime is 161032759. The next prime is 161032811. The reversal of 161032793 is 397230161.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 397230161 = 71 ⋅5594791.

It can be written as a sum of positive squares in 2 ways, for example, as 33500944 + 127531849 = 5788^2 + 11293^2 .

It is a cyclic number.

It is not a de Polignac number, because 161032793 - 2¹⁴ = 161016409 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (161032723) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 540230 + ... + 540527.

It is an arithmetic number, because the mean of its divisors is an integer number (40528425).

Almost surely, 2^161032793 is an apocalyptic number.

It is an amenable number.

161032793 is a deficient number, since it is larger than the sum of its proper divisors (1080907).

161032793 is a wasteful number, since it uses less digits than its factorization.

161032793 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1080906.

The product of its (nonzero) digits is 6804, while the sum is 32.

The square root of 161032793 is about 12689.8696998827. The cubic root of 161032793 is about 544.0491154202.

The spelling of 161032793 in words is "one hundred sixty-one million, thirty-two thousand, seven hundred ninety-three".