7749338481 has 6 divisors (see below), whose sum is σ = 11193488930. Its totient is φ = 5166225648.

The previous prime is 7749338479. The next prime is 7749338507. The reversal of 7749338481 is 1848339477.

7749338481 is a `hidden beast` number, since 7 + 74 + 93 + 3 + 8 + 481 = 666.

It can be written as a sum of positive squares in only one way, i.e., 5381542881 + 2367795600 = 73359^2 + 48660^2 .

It is not a de Polignac number, because 7749338481 - 2¹ = 7749338479 is a prime.

It is a super-2 number, since 2×7749338481² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7749338581) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 430518796 + ... + 430518813.

Almost surely, 2^7749338481 is an apocalyptic number.

It is an amenable number.

7749338481 is a deficient number, since it is larger than the sum of its proper divisors (3444150449).

7749338481 is a wasteful number, since it uses less digits than its factorization.

7749338481 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 861037615 (or 861037612 counting only the distinct ones).

The product of its digits is 4064256, while the sum is 54.

The square root of 7749338481 is about 88030.3270526698. The cubic root of 7749338481 is about 1978.8894974209.

The spelling of 7749338481 in words is "seven billion, seven hundred forty-nine million, three hundred thirty-eight thousand, four hundred eighty-one".