135290161 has 2 divisors, whose sum is σ = 135290162. Its totient is φ = 135290160.

The previous prime is 135290149. The next prime is 135290171. The reversal of 135290161 is 161092531.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 135280161 + 10000 = 11631^2 + 100^2 .

It is a cyclic number.

It is not a de Polignac number, because 135290161 - 2⁷ = 135290033 is a prime.

It is not a weakly prime, because it can be changed into another prime (135290171) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 67645080 + 67645081.

It is an arithmetic number, because the mean of its divisors is an integer number (67645081).

Almost surely, 2^135290161 is an apocalyptic number.

It is an amenable number.

135290161 is a deficient number, since it is larger than the sum of its proper divisors (1).

135290161 is an equidigital number, since it uses as much as digits as its factorization.

135290161 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1620, while the sum is 28.

The square root of 135290161 is about 11631.4298777064. The cubic root of 135290161 is about 513.3600530965.

The spelling of 135290161 in words is "one hundred thirty-five million, two hundred ninety thousand, one hundred sixty-one".