138159147 has 16 divisors (see below), whose sum is σ = 216219392. Its totient is φ = 76813920.

The previous prime is 138159101. The next prime is 138159167. The reversal of 138159147 is 741951831.

It is not a de Polignac number, because 138159147 - 2¹⁵ = 138126379 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (138159167) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 88129 + ... + 89682.

It is an arithmetic number, because the mean of its divisors is an integer number (13513712).

Almost surely, 2^138159147 is an apocalyptic number.

138159147 is a deficient number, since it is larger than the sum of its proper divisors (78060245).

138159147 is a wasteful number, since it uses less digits than its factorization.

138159147 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 177858.

The product of its digits is 30240, while the sum is 39.

The square root of 138159147 is about 11754.1119188138. Note that the first 3 decimals coincide. The cubic root of 138159147 is about 516.9635000988.

The spelling of 138159147 in words is "one hundred thirty-eight million, one hundred fifty-nine thousand, one hundred forty-seven".