138034573 has 4 divisors (see below), whose sum is σ = 138058108. Its totient is φ = 138011040.

The previous prime is 138034541. The next prime is 138034583. The reversal of 138034573 is 375430831.

138034573 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 a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 375430831 = 79 ⋅4752289.

It can be written as a sum of positive squares in 2 ways, for example, as 61261929 + 76772644 = 7827^2 + 8762^2 .

It is a cyclic number.

It is not a de Polignac number, because 138034573 - 2⁵ = 138034541 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (138034513) 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, 4903 + ... + 17323.

It is an arithmetic number, because the mean of its divisors is an integer number (34514527).

Almost surely, 2^138034573 is an apocalyptic number.

It is an amenable number.

138034573 is a deficient number, since it is larger than the sum of its proper divisors (23535).

138034573 is a wasteful number, since it uses less digits than its factorization.

138034573 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23534.

The product of its (nonzero) digits is 30240, while the sum is 34.

The square root of 138034573 is about 11748.8115569193. The cubic root of 138034573 is about 516.8080764972.

It can be divided in two parts, 1380 and 34573, that added together give a palindrome (35953).

The spelling of 138034573 in words is "one hundred thirty-eight million, thirty-four thousand, five hundred seventy-three".