7848138081 has 64 divisors (see below), whose sum is σ = 12928481280. Its totient is φ = 4135173120.

The previous prime is 7848138019. The next prime is 7848138083. The reversal of 7848138081 is 1808318487.

It is not a de Polignac number, because 7848138081 - 2¹¹ = 7848136033 is a prime.

It is a super-2 number, since 2×7848138081² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 7848138081.

It is not an unprimeable number, because it can be changed into a prime (7848138083) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 2768841 + ... + 2771673.

It is an arithmetic number, because the mean of its divisors is an integer number (202007520).

Almost surely, 2^7848138081 is an apocalyptic number.

It is an amenable number.

7848138081 is a deficient number, since it is larger than the sum of its proper divisors (5080343199).

7848138081 is a wasteful number, since it uses less digits than its factorization.

7848138081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3046.

The product of its (nonzero) digits is 344064, while the sum is 48.

The square root of 7848138081 is about 88589.7176934208. The cubic root of 7848138081 is about 1987.2639082245.

The spelling of 7848138081 in words is "seven billion, eight hundred forty-eight million, one hundred thirty-eight thousand, eighty-one".