138167205 has 16 divisors (see below), whose sum is σ = 241164864. Its totient is φ = 66990080.

The previous prime is 138167189. The next prime is 138167219. The reversal of 138167205 is 502761831.

It is not a de Polignac number, because 138167205 - 2⁴ = 138167189 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 418524 + ... + 418853.

It is an arithmetic number, because the mean of its divisors is an integer number (15072804).

Almost surely, 2^138167205 is an apocalyptic number.

138167205 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

138167205 is a deficient number, since it is larger than the sum of its proper divisors (102997659).

138167205 is a wasteful number, since it uses less digits than its factorization.

138167205 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 837396.

The product of its (nonzero) digits is 10080, while the sum is 33.

The square root of 138167205 is about 11754.4546874791. The cubic root of 138167205 is about 516.9735503705.

It can be divided in two parts, 1381 and 67205, that added together give a palindrome (68586).

The spelling of 138167205 in words is "one hundred thirty-eight million, one hundred sixty-seven thousand, two hundred five".