7974554481 has 6 divisors (see below), whose sum is σ = 11518800930. Its totient is φ = 5316369648.

The previous prime is 7974554479. The next prime is 7974554513. The reversal of 7974554481 is 1844554797.

7974554481 is a `hidden beast` number, since 7 + 9 + 7 + 4 + 554 + 4 + 81 = 666.

It can be written as a sum of positive squares in only one way, i.e., 6644858256 + 1329696225 = 81516^2 + 36465^2 .

It is not a de Polignac number, because 7974554481 - 2¹ = 7974554479 is a prime.

It is a super-2 number, since 2×7974554481² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (7974554431) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 443030796 + ... + 443030813.

It is an arithmetic number, because the mean of its divisors is an integer number (1919800155).

Almost surely, 2^7974554481 is an apocalyptic number.

It is an amenable number.

7974554481 is a deficient number, since it is larger than the sum of its proper divisors (3544246449).

7974554481 is a wasteful number, since it uses less digits than its factorization.

7974554481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 886061615 (or 886061612 counting only the distinct ones).

The product of its digits is 5644800, while the sum is 54.

The square root of 7974554481 is about 89300.3610351044. The cubic root of 7974554481 is about 1997.8772879271.

The spelling of 7974554481 in words is "seven billion, nine hundred seventy-four million, five hundred fifty-four thousand, four hundred eighty-one".