138085086 has 16 divisors (see below), whose sum is σ = 277156368. Its totient is φ = 45864000.

The previous prime is 138085063. The next prime is 138085091. The reversal of 138085086 is 680580831.

It is a happy number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

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, 39265 + ... + 42636.

It is an arithmetic number, because the mean of its divisors is an integer number (17322273).

Almost surely, 2^138085086 is an apocalyptic number.

138085086 is an abundant number, since it is smaller than the sum of its proper divisors (139071282).

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

138085086 is a wasteful number, since it uses less digits than its factorization.

138085086 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82187.

The product of its (nonzero) digits is 46080, while the sum is 39.

The square root of 138085086 is about 11750.9610670787. The cubic root of 138085086 is about 516.8711098423.

The spelling of 138085086 in words is "one hundred thirty-eight million, eighty-five thousand, eighty-six".