3138845273 has 4 divisors (see below), whose sum is σ = 3141222708. Its totient is φ = 3136467840.

The previous prime is 3138845261. The next prime is 3138845291. The reversal of 3138845273 is 3725488313.

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 2376367504 + 762477769 = 48748^2 + 27613^2 .

It is a cyclic number.

It is not a de Polignac number, because 3138845273 - 2⁴ = 3138845257 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (3138845233) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1186736 + ... + 1189377.

It is an arithmetic number, because the mean of its divisors is an integer number (785305677).

Almost surely, 2^3138845273 is an apocalyptic number.

It is an amenable number.

3138845273 is a deficient number, since it is larger than the sum of its proper divisors (2377435).

3138845273 is a wasteful number, since it uses less digits than its factorization.

3138845273 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2377434.

The product of its digits is 483840, while the sum is 44.

The square root of 3138845273 is about 56025.3984635540. The cubic root of 3138845273 is about 1464.1648255267.

The spelling of 3138845273 in words is "three billion, one hundred thirty-eight million, eight hundred forty-five thousand, two hundred seventy-three".