138161073 has 8 divisors (see below), whose sum is σ = 184744000. Its totient is φ = 91842768.

The previous prime is 138161047. The next prime is 138161081. The reversal of 138161073 is 370161831.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 138161073 - 2¹⁶ = 138095537 is a prime.

It is a super-2 number, since 2×138161073² = 38176964185022658, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 138161073.

It is not an unprimeable number, because it can be changed into a prime (138161033) 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, 64933 + ... + 67026.

It is an arithmetic number, because the mean of its divisors is an integer number (23093000).

Almost surely, 2^138161073 is an apocalyptic number.

It is an amenable number.

138161073 is a deficient number, since it is larger than the sum of its proper divisors (46582927).

138161073 is a wasteful number, since it uses less digits than its factorization.

138161073 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 132311.

The product of its (nonzero) digits is 3024, while the sum is 30.

The square root of 138161073 is about 11754.1938473040. The cubic root of 138161073 is about 516.9659023214.

The spelling of 138161073 in words is "one hundred thirty-eight million, one hundred sixty-one thousand, seventy-three".