138064205 has 16 divisors (see below), whose sum is σ = 173377584. Its totient is φ = 105431040.

The previous prime is 138064181. The next prime is 138064229. The reversal of 138064205 is 502460831.

It is an interprime number because it is at equal distance from previous prime (138064181) and next prime (138064229).

It can be written as a sum of positive squares in 8 ways, for example, as 26275876 + 111788329 = 5126^2 + 10573^2 .

It is not a de Polignac number, because 138064205 - 2⁶ = 138064141 is a prime.

It is a Duffinian 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 15 ways as a sum of consecutive naturals, for example, 2765 + ... + 16845.

It is an arithmetic number, because the mean of its divisors is an integer number (10836099).

Almost surely, 2^138064205 is an apocalyptic number.

It is an amenable number.

138064205 is a deficient number, since it is larger than the sum of its proper divisors (35313379).

138064205 is a wasteful number, since it uses less digits than its factorization.

138064205 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14176.

The product of its (nonzero) digits is 5760, while the sum is 29.

The square root of 138064205 is about 11750.0725529675. The cubic root of 138064205 is about 516.8450550620.

The spelling of 138064205 in words is "one hundred thirty-eight million, sixty-four thousand, two hundred five".