7181138481 has 32 divisors (see below), whose sum is σ = 10629881856. Its totient is φ = 4275960000.

The previous prime is 7181138429. The next prime is 7181138501. The reversal of 7181138481 is 1848311817.

7181138481 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 7181138481 - 2¹³ = 7181130289 is a prime.

It is a super-2 number, since 2×7181138481² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (7181133481) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 428400 + ... + 444846.

It is an arithmetic number, because the mean of its divisors is an integer number (332183808).

Almost surely, 2^7181138481 is an apocalyptic number.

It is an amenable number.

7181138481 is a deficient number, since it is larger than the sum of its proper divisors (3448743375).

7181138481 is a wasteful number, since it uses less digits than its factorization.

7181138481 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16693.

The product of its digits is 43008, while the sum is 42.

The square root of 7181138481 is about 84741.5982915121. The cubic root of 7181138481 is about 1929.2911283423.

The spelling of 7181138481 in words is "seven billion, one hundred eighty-one million, one hundred thirty-eight thousand, four hundred eighty-one".