161436033 has 24 divisors (see below), whose sum is σ = 257021856. Its totient is φ = 96825600.

The previous prime is 161436017. The next prime is 161436047. The reversal of 161436033 is 330634161.

161436033 is a `hidden beast` number, since 16 + 1 + 43 + 603 + 3 = 666.

It is not a de Polignac number, because 161436033 - 2⁴ = 161436017 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 161435988 and 161436006.

It is not an unprimeable number, because it can be changed into a prime (161436013) 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 23 ways as a sum of consecutive naturals, for example, 1198 + ... + 18008.

It is an arithmetic number, because the mean of its divisors is an integer number (10709244).

Almost surely, 2^161436033 is an apocalyptic number.

It is an amenable number.

161436033 is a deficient number, since it is larger than the sum of its proper divisors (95585823).

161436033 is a wasteful number, since it uses less digits than its factorization.

161436033 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16925 (or 16922 counting only the distinct ones).

The product of its (nonzero) digits is 3888, while the sum is 27.

The square root of 161436033 is about 12705.7480299272. The cubic root of 161436033 is about 544.5028521987.

The spelling of 161436033 in words is "one hundred sixty-one million, four hundred thirty-six thousand, thirty-three".