8381503085 has 4 divisors (see below), whose sum is σ = 10057803708. Its totient is φ = 6705202464.

The previous prime is 8381503027. The next prime is 8381503199. The reversal of 8381503085 is 5803051838.

8381503085 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.

It can be written as a sum of positive squares in 2 ways, for example, as 4762518121 + 3618984964 = 69011^2 + 60158^2 .

It is a cyclic number.

It is not a de Polignac number, because 8381503085 - 2⁶ = 8381503021 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 838150304 + ... + 838150313.

It is an arithmetic number, because the mean of its divisors is an integer number (2514450927).

Almost surely, 2^8381503085 is an apocalyptic number.

It is an amenable number.

8381503085 is a deficient number, since it is larger than the sum of its proper divisors (1676300623).

8381503085 is a wasteful number, since it uses less digits than its factorization.

8381503085 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1676300622.

The product of its (nonzero) digits is 115200, while the sum is 41.

The square root of 8381503085 is about 91550.5493429723. The cubic root of 8381503085 is about 2031.2995379666.

The spelling of 8381503085 in words is "eight billion, three hundred eighty-one million, five hundred three thousand, eighty-five".