8187378841 has 4 divisors (see below), whose sum is σ = 8189104000. Its totient is φ = 8185653684.

The previous prime is 8187378827. The next prime is 8187378851. The reversal of 8187378841 is 1488737818.

8187378841 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 8187378841 - 2¹³ = 8187370649 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8187378821) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 855441 + ... + 864958.

It is an arithmetic number, because the mean of its divisors is an integer number (2047276000).

Almost surely, 2^8187378841 is an apocalyptic number.

It is an amenable number.

8187378841 is a deficient number, since it is larger than the sum of its proper divisors (1725159).

8187378841 is a wasteful number, since it uses less digits than its factorization.

8187378841 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1725158.

The product of its digits is 2408448, while the sum is 55.

The square root of 8187378841 is about 90484.1358526455. The cubic root of 8187378841 is about 2015.4945528370.

The spelling of 8187378841 in words is "eight billion, one hundred eighty-seven million, three hundred seventy-eight thousand, eight hundred forty-one".