161826101 has 2 divisors, whose sum is σ = 161826102. Its totient is φ = 161826100.

The previous prime is 161826089. The next prime is 161826109. The reversal of 161826101 is 101628161.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 139263601 + 22562500 = 11801^2 + 4750^2 .

It is a cyclic number.

It is not a de Polignac number, because 161826101 - 2⁶ = 161826037 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (161826109) 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 as a sum of consecutive naturals, namely, 80913050 + 80913051.

It is an arithmetic number, because the mean of its divisors is an integer number (80913051).

Almost surely, 2^161826101 is an apocalyptic number.

It is an amenable number.

161826101 is a deficient number, since it is larger than the sum of its proper divisors (1).

161826101 is an equidigital number, since it uses as much as digits as its factorization.

161826101 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 576, while the sum is 26.

The square root of 161826101 is about 12721.0888291844. The cubic root of 161826101 is about 544.9410490904.

The spelling of 161826101 in words is "one hundred sixty-one million, eight hundred twenty-six thousand, one hundred one".