138867373 has 4 divisors (see below), whose sum is σ = 147036060. Its totient is φ = 130698688.

The previous prime is 138867343. The next prime is 138867433. The reversal of 138867373 is 373768831.

138867373 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.

It can be written as a sum of positive squares in 2 ways, for example, as 100761444 + 38105929 = 10038^2 + 6173^2 .

It is a cyclic number.

It is not a de Polignac number, because 138867373 - 2²⁵ = 105312941 is a prime.

It is a super-2 number, since 2×138867373² = 38568294567842258, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (138867343) 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, 4084318 + ... + 4084351.

It is an arithmetic number, because the mean of its divisors is an integer number (36759015).

Almost surely, 2^138867373 is an apocalyptic number.

It is an amenable number.

138867373 is a deficient number, since it is larger than the sum of its proper divisors (8168687).

138867373 is an equidigital number, since it uses as much as digits as its factorization.

138867373 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8168686.

The product of its digits is 508032, while the sum is 46.

The square root of 138867373 is about 11784.2001425638. The cubic root of 138867373 is about 517.8453409969.

The spelling of 138867373 in words is "one hundred thirty-eight million, eight hundred sixty-seven thousand, three hundred seventy-three".