36609138 has 16 divisors (see below), whose sum is σ = 81353760. Its totient is φ = 12203028.

The previous prime is 36609137. The next prime is 36609149. The reversal of 36609138 is 83190663.

It is a happy number.

36609138 is a `hidden beast` number, since 36 + 609 + 13 + 8 = 666.

36609138 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (36609137) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 338920 + ... + 339027.

It is an arithmetic number, because the mean of its divisors is an integer number (5084610).

Almost surely, 2^36609138 is an apocalyptic number.

36609138 is an abundant number, since it is smaller than the sum of its proper divisors (44744622).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

36609138 is a wasteful number, since it uses less digits than its factorization.

36609138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 677958 (or 677952 counting only the distinct ones).

The product of its (nonzero) digits is 23328, while the sum is 36.

The square root of 36609138 is about 6050.5485701711. The cubic root of 36609138 is about 332.0446606103.

The spelling of 36609138 in words is "thirty-six million, six hundred nine thousand, one hundred thirty-eight".