8045277381 has 6 divisors (see below), whose sum is σ = 11620956230. Its totient is φ = 5363518248.

The previous prime is 8045277379. The next prime is 8045277391. The reversal of 8045277381 is 1837725408.

It can be written as a sum of positive squares in only one way, i.e., 6199200225 + 1846077156 = 78735^2 + 42966^2 .

It is not a de Polignac number, because 8045277381 - 2¹ = 8045277379 is a prime.

It is a super-2 number, since 2×8045277381² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8045277301) 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, 446959846 + ... + 446959863.

Almost surely, 2^8045277381 is an apocalyptic number.

It is an amenable number.

8045277381 is a deficient number, since it is larger than the sum of its proper divisors (3575678849).

8045277381 is a wasteful number, since it uses less digits than its factorization.

8045277381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 893919715 (or 893919712 counting only the distinct ones).

The product of its (nonzero) digits is 376320, while the sum is 45.

The square root of 8045277381 is about 89695.4702367962. The cubic root of 8045277381 is about 2003.7660191820.

The spelling of 8045277381 in words is "eight billion, forty-five million, two hundred seventy-seven thousand, three hundred eighty-one".