161831753 has 2 divisors, whose sum is σ = 161831754. Its totient is φ = 161831752.

The previous prime is 161831743. The next prime is 161831777. The reversal of 161831753 is 357138161.

161831753 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 152571904 + 9259849 = 12352^2 + 3043^2 .

It is a cyclic number.

It is not a de Polignac number, because 161831753 - 2⁶ = 161831689 is a prime.

It is not a weakly prime, because it can be changed into another prime (161831713) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 80915876 + 80915877.

It is an arithmetic number, because the mean of its divisors is an integer number (80915877).

Almost surely, 2^161831753 is an apocalyptic number.

It is an amenable number.

161831753 is a deficient number, since it is larger than the sum of its proper divisors (1).

161831753 is an equidigital number, since it uses as much as digits as its factorization.

161831753 is an evil number, because the sum of its binary digits is even.

The product of its digits is 15120, while the sum is 35.

The square root of 161831753 is about 12721.3109780400. The cubic root of 161831753 is about 544.9473932894.

The spelling of 161831753 in words is "one hundred sixty-one million, eight hundred thirty-one thousand, seven hundred fifty-three".