135019189 has 2 divisors, whose sum is σ = 135019190. Its totient is φ = 135019188.

The previous prime is 135019153. The next prime is 135019193. The reversal of 135019189 is 981910531.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 80407089 + 54612100 = 8967^2 + 7390^2 .

It is a cyclic number.

It is not a de Polignac number, because 135019189 - 2²⁷ = 801461 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (135019589) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 67509594 + 67509595.

It is an arithmetic number, because the mean of its divisors is an integer number (67509595).

Almost surely, 2^135019189 is an apocalyptic number.

It is an amenable number.

135019189 is a deficient number, since it is larger than the sum of its proper divisors (1).

135019189 is an equidigital number, since it uses as much as digits as its factorization.

135019189 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9720, while the sum is 37.

The square root of 135019189 is about 11619.7757723633. The cubic root of 135019189 is about 513.0170885763.

The spelling of 135019189 in words is "one hundred thirty-five million, nineteen thousand, one hundred eighty-nine".