7315138522 has 12 divisors (see below), whose sum is σ = 11656129950. Its totient is φ = 3442417856.

The previous prime is 7315138511. The next prime is 7315138531. The reversal of 7315138522 is 2258315137.

It can be written as a sum of positive squares in 3 ways, for example, as 6619286881 + 695851641 = 81359^2 + 26379^2 .

It is a super-2 number, since 2×7315138522² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 6327397 + ... + 6328552.

Almost surely, 2^7315138522 is an apocalyptic number.

7315138522 is a deficient number, since it is larger than the sum of its proper divisors (4340991428).

7315138522 is a wasteful number, since it uses less digits than its factorization.

7315138522 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12655985 (or 12655968 counting only the distinct ones).

The product of its digits is 50400, while the sum is 37.

The square root of 7315138522 is about 85528.5830702228. The cubic root of 7315138522 is about 1941.2174419878.

The spelling of 7315138522 in words is "seven billion, three hundred fifteen million, one hundred thirty-eight thousand, five hundred twenty-two".