138161003 has 4 divisors (see below), whose sum is σ = 138194928. Its totient is φ = 138127080.

The previous prime is 138160993. The next prime is 138161011. The reversal of 138161003 is 300161831.

138161003 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 300161831 = 11689 ⋅25679.

It is a cyclic number.

It is not a de Polignac number, because 138161003 - 2⁴ = 138160987 is a prime.

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 138161003.

It is not an unprimeable number, because it can be changed into a prime (138161033) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9863 + ... + 19328.

It is an arithmetic number, because the mean of its divisors is an integer number (34548732).

Almost surely, 2^138161003 is an apocalyptic number.

138161003 is a deficient number, since it is larger than the sum of its proper divisors (33925).

138161003 is an equidigital number, since it uses as much as digits as its factorization.

138161003 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33924.

The product of its (nonzero) digits is 432, while the sum is 23.

The square root of 138161003 is about 11754.1908696430. The cubic root of 138161003 is about 516.9658150136.

The spelling of 138161003 in words is "one hundred thirty-eight million, one hundred sixty-one thousand, three".