135498169 has 2 divisors, whose sum is σ = 135498170. Its totient is φ = 135498168.

The previous prime is 135498137. The next prime is 135498191. The reversal of 135498169 is 961894531.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 135419769 + 78400 = 11637^2 + 280^2 .

It is a cyclic number.

It is not a de Polignac number, because 135498169 - 2⁵ = 135498137 is a prime.

It is a super-2 number, since 2×135498169² = 36719507604705122, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (135498119) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 67749084 + 67749085.

It is an arithmetic number, because the mean of its divisors is an integer number (67749085).

Almost surely, 2^135498169 is an apocalyptic number.

It is an amenable number.

135498169 is a deficient number, since it is larger than the sum of its proper divisors (1).

135498169 is an equidigital number, since it uses as much as digits as its factorization.

135498169 is an evil number, because the sum of its binary digits is even.

The product of its digits is 233280, while the sum is 46.

The square root of 135498169 is about 11640.3680783728. The cubic root of 135498169 is about 513.6230146150.

The spelling of 135498169 in words is "one hundred thirty-five million, four hundred ninety-eight thousand, one hundred sixty-nine".