8280735381 has 10 divisors (see below), whose sum is σ = 12369987542. Its totient is φ = 5520490200.

The previous prime is 8280735361. The next prime is 8280735389. The reversal of 8280735381 is 1835370828.

It can be written as a sum of positive squares in only one way, i.e., 4895241156 + 3385494225 = 69966^2 + 58185^2 .

It is not a de Polignac number, because 8280735381 - 2¹⁴ = 8280718997 is a prime.

It is a super-2 number, since 2×8280735381² (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 (8280735389) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 51115570 + ... + 51115731.

Almost surely, 2^8280735381 is an apocalyptic number.

8280735381 is a gapful number since it is divisible by the number (81) formed by its first and last digit.

It is an amenable number.

8280735381 is a deficient number, since it is larger than the sum of its proper divisors (4089252161).

8280735381 is a wasteful number, since it uses less digits than its factorization.

8280735381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 102231313 (or 102231304 counting only the distinct ones).

The product of its (nonzero) digits is 322560, while the sum is 45.

The square root of 8280735381 is about 90998.5460378351. The cubic root of 8280735381 is about 2023.1261744168.

The spelling of 8280735381 in words is "eight billion, two hundred eighty million, seven hundred thirty-five thousand, three hundred eighty-one".