161750133 has 12 divisors (see below), whose sum is σ = 239073120. Its totient is φ = 105325416.

The previous prime is 161750131. The next prime is 161750137. The reversal of 161750133 is 331057161.

It is not a de Polignac number, because 161750133 - 2¹ = 161750131 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 161750097 and 161750106.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161750131) 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 11 ways as a sum of consecutive naturals, for example, 208593 + ... + 209366.

It is an arithmetic number, because the mean of its divisors is an integer number (19922760).

Almost surely, 2^161750133 is an apocalyptic number.

It is an amenable number.

161750133 is a deficient number, since it is larger than the sum of its proper divisors (77322987).

161750133 is a wasteful number, since it uses less digits than its factorization.

161750133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 418008 (or 418005 counting only the distinct ones).

The product of its (nonzero) digits is 1890, while the sum is 27.

The square root of 161750133 is about 12718.1025707454. The cubic root of 161750133 is about 544.8557629694.

The spelling of 161750133 in words is "one hundred sixty-one million, seven hundred fifty thousand, one hundred thirty-three".