8170378249 has 16 divisors (see below), whose sum is σ = 9293137920. Its totient is φ = 7114988160.

The previous prime is 8170378243. The next prime is 8170378253. The reversal of 8170378249 is 9428730718.

It is a cyclic number.

It is not a de Polignac number, because 8170378249 - 2³ = 8170378241 is a prime.

It is not an unprimeable number, because it can be changed into a prime (8170378241) 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 15 ways as a sum of consecutive naturals, for example, 60324 + ... + 141349.

It is an arithmetic number, because the mean of its divisors is an integer number (580821120).

Almost surely, 2^8170378249 is an apocalyptic number.

It is an amenable number.

8170378249 is a deficient number, since it is larger than the sum of its proper divisors (1122759671).

8170378249 is a wasteful number, since it uses less digits than its factorization.

8170378249 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 201840.

The product of its (nonzero) digits is 677376, while the sum is 49.

The square root of 8170378249 is about 90390.1446453096. The cubic root of 8170378249 is about 2014.0985690612.

The spelling of 8170378249 in words is "eight billion, one hundred seventy million, three hundred seventy-eight thousand, two hundred forty-nine".