161113529 has 2 divisors, whose sum is σ = 161113530. Its totient is φ = 161113528.

The previous prime is 161113523. The next prime is 161113543. The reversal of 161113529 is 925311161.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 160909225 + 204304 = 12685^2 + 452^2 .

It is a cyclic number.

It is not a de Polignac number, because 161113529 - 2⁸ = 161113273 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (161113523) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 80556764 + 80556765.

It is an arithmetic number, because the mean of its divisors is an integer number (80556765).

Almost surely, 2^161113529 is an apocalyptic number.

It is an amenable number.

161113529 is a deficient number, since it is larger than the sum of its proper divisors (1).

161113529 is an equidigital number, since it uses as much as digits as its factorization.

161113529 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1620, while the sum is 29.

The square root of 161113529 is about 12693.0504213920. The cubic root of 161113529 is about 544.1400223920.

The spelling of 161113529 in words is "one hundred sixty-one million, one hundred thirteen thousand, five hundred twenty-nine".