7113161538 has 36 divisors (see below), whose sum is σ = 17928072630. Its totient is φ = 2032331616.

The previous prime is 7113161527. The next prime is 7113161569. The reversal of 7113161538 is 8351613117.

7113161538 is a `hidden beast` number, since 7 + 1 + 1 + 3 + 1 + 615 + 38 = 666.

It can be written as a sum of positive squares in only one way, i.e., 6683553009 + 429608529 = 81753^2 + 20727^2 .

It is a Curzon number.

It is an unprimeable number.

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 17 ways as a sum of consecutive naturals, for example, 4031523 + ... + 4033286.

Almost surely, 2^7113161538 is an apocalyptic number.

7113161538 is an abundant number, since it is smaller than the sum of its proper divisors (10814911092).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

7113161538 is a wasteful number, since it uses less digits than its factorization.

7113161538 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8064831 (or 8064821 counting only the distinct ones).

The product of its digits is 15120, while the sum is 36.

The square root of 7113161538 is about 84339.5609307993. The cubic root of 7113161538 is about 1923.1842360212.

The spelling of 7113161538 in words is "seven billion, one hundred thirteen million, one hundred sixty-one thousand, five hundred thirty-eight".