138211073 has 64 divisors (see below), whose sum is σ = 201062400. Its totient is φ = 91990080.

The previous prime is 138211069. The next prime is 138211081. The reversal of 138211073 is 370112831.

It is not a de Polignac number, because 138211073 - 2² = 138211069 is a prime.

It is a super-2 number, since 2×138211073² = 38204601399622658, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (138211033) 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 63 ways as a sum of consecutive naturals, for example, 3214190 + ... + 3214232.

It is an arithmetic number, because the mean of its divisors is an integer number (3141600).

Almost surely, 2^138211073 is an apocalyptic number.

138211073 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

138211073 is a deficient number, since it is larger than the sum of its proper divisors (62851327).

138211073 is a wasteful number, since it uses less digits than its factorization.

138211073 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 119 (or 93 counting only the distinct ones).

The product of its (nonzero) digits is 1008, while the sum is 26.

The square root of 138211073 is about 11756.3205553438. The cubic root of 138211073 is about 517.0282575060.

The spelling of 138211073 in words is "one hundred thirty-eight million, two hundred eleven thousand, seventy-three".