8378411581 has 8 divisors (see below), whose sum is σ = 8417700864. Its totient is φ = 8339210880.

The previous prime is 8378411567. The next prime is 8378411617. The reversal of 8378411581 is 1851148738.

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 8378411581 - 2¹⁹ = 8377887293 is a prime.

It is a super-2 number, since 2×8378411581² (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 (8378411081) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 171396 + ... + 214786.

It is an arithmetic number, because the mean of its divisors is an integer number (1052212608).

Almost surely, 2^8378411581 is an apocalyptic number.

It is an amenable number.

8378411581 is a deficient number, since it is larger than the sum of its proper divisors (39289283).

8378411581 is a wasteful number, since it uses less digits than its factorization.

8378411581 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44291.

The product of its digits is 215040, while the sum is 46.

The square root of 8378411581 is about 91533.6636489549. The cubic root of 8378411581 is about 2031.0497600594.

The spelling of 8378411581 in words is "eight billion, three hundred seventy-eight million, four hundred eleven thousand, five hundred eighty-one".