136015389 has 8 divisors (see below), whose sum is σ = 201504320. Its totient is φ = 90676908.

The previous prime is 136015309. The next prime is 136015469. The reversal of 136015389 is 983510631.

It is a happy number.

136015389 is a `hidden beast` number, since 13 + 601 + 5 + 38 + 9 = 666.

136015389 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (136015309) and next prime (136015469).

It is not a de Polignac number, because 136015389 - 2⁹ = 136014877 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (136015309) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2518777 + ... + 2518830.

It is an arithmetic number, because the mean of its divisors is an integer number (25188040).

Almost surely, 2^136015389 is an apocalyptic number.

It is an amenable number.

136015389 is a deficient number, since it is larger than the sum of its proper divisors (65488931).

136015389 is an equidigital number, since it uses as much as digits as its factorization.

136015389 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5037616 (or 5037610 counting only the distinct ones).

The product of its (nonzero) digits is 19440, while the sum is 36.

The square root of 136015389 is about 11662.5635689586. The cubic root of 136015389 is about 514.2757141905.

The spelling of 136015389 in words is "one hundred thirty-six million, fifteen thousand, three hundred eighty-nine".