3138509348 has 24 divisors (see below), whose sum is σ = 5935099128. Its totient is φ = 1443591936.

The previous prime is 3138509293. The next prime is 3138509401. The reversal of 3138509348 is 8439058313.

It can be written as a sum of positive squares in 4 ways, for example, as 1627476964 + 1511032384 = 40342^2 + 38872^2 .

It is a junction number, because it is equal to n+sod(n) for n = 3138509299 and 3138509308.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 87761 + ... + 118232.

It is an arithmetic number, because the mean of its divisors is an integer number (247295797).

Almost surely, 2^3138509348 is an apocalyptic number.

It is an amenable number.

3138509348 is a deficient number, since it is larger than the sum of its proper divisors (2796589780).

3138509348 is a wasteful number, since it uses less digits than its factorization.

3138509348 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 206303 (or 206301 counting only the distinct ones).

The product of its (nonzero) digits is 311040, while the sum is 44.

The square root of 3138509348 is about 56022.4004126921. The cubic root of 3138509348 is about 1464.1125911248.

The spelling of 3138509348 in words is "three billion, one hundred thirty-eight million, five hundred nine thousand, three hundred forty-eight".