161233443 has 32 divisors (see below), whose sum is σ = 279659520. Its totient is φ = 89881920.

The previous prime is 161233439. The next prime is 161233447. The reversal of 161233443 is 344332161.

161233443 is a `hidden beast` number, since 1 + 612 + 3 + 3 + 4 + 43 = 666.

It is an interprime number because it is at equal distance from previous prime (161233439) and next prime (161233447).

It is not a de Polignac number, because 161233443 - 2² = 161233439 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (161233447) 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 31 ways as a sum of consecutive naturals, for example, 2655 + ... + 18152.

It is an arithmetic number, because the mean of its divisors is an integer number (8739360).

Almost surely, 2^161233443 is an apocalyptic number.

161233443 is a deficient number, since it is larger than the sum of its proper divisors (118426077).

161233443 is a wasteful number, since it uses less digits than its factorization.

161233443 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20864 (or 20858 counting only the distinct ones).

The product of its digits is 5184, while the sum is 27.

The square root of 161233443 is about 12697.7731512262. The cubic root of 161233443 is about 544.2749869014.

The spelling of 161233443 in words is "one hundred sixty-one million, two hundred thirty-three thousand, four hundred forty-three".