135801589 has 16 divisors (see below), whose sum is σ = 172771200. Its totient is φ = 105816480.

The previous prime is 135801587. The next prime is 135801599. The reversal of 135801589 is 985108531.

It is not a de Polignac number, because 135801589 - 2¹ = 135801587 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (135801587) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14224 + ... + 21769.

It is an arithmetic number, because the mean of its divisors is an integer number (10798200).

Almost surely, 2^135801589 is an apocalyptic number.

It is an amenable number.

135801589 is a deficient number, since it is larger than the sum of its proper divisors (36969611).

135801589 is an equidigital number, since it uses as much as digits as its factorization.

135801589 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36025 (or 36011 counting only the distinct ones).

The product of its (nonzero) digits is 43200, while the sum is 40.

The square root of 135801589 is about 11653.3938833286. The cubic root of 135801589 is about 514.0061128132.

The spelling of 135801589 in words is "one hundred thirty-five million, eight hundred one thousand, five hundred eighty-nine".