8148781369 has 8 divisors (see below), whose sum is σ = 8609132160. Its totient is φ = 7700387856.

The previous prime is 8148781357. The next prime is 8148781379. The reversal of 8148781369 is 9631878418.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 8148781369 - 2¹³ = 8148773177 is a prime.

It is a super-2 number, since 2×8148781369² (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 (8148781379) 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 7 ways as a sum of consecutive naturals, for example, 2987919 + ... + 2990644.

It is an arithmetic number, because the mean of its divisors is an integer number (1076141520).

Almost surely, 2^8148781369 is an apocalyptic number.

It is an amenable number.

8148781369 is a deficient number, since it is larger than the sum of its proper divisors (460350791).

8148781369 is a wasteful number, since it uses less digits than its factorization.

8148781369 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5978639.

The product of its digits is 2322432, while the sum is 55.

The square root of 8148781369 is about 90270.6008011468. The cubic root of 8148781369 is about 2012.3223710822.

The spelling of 8148781369 in words is "eight billion, one hundred forty-eight million, seven hundred eighty-one thousand, three hundred sixty-nine".