8503971823 has 2 divisors, whose sum is σ = 8503971824. Its totient is φ = 8503971822.

The previous prime is 8503971811. The next prime is 8503971859. The reversal of 8503971823 is 3281793058.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-8503971823 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8503971023) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4251985911 + 4251985912.

It is an arithmetic number, because the mean of its divisors is an integer number (4251985912).

Almost surely, 2^8503971823 is an apocalyptic number.

8503971823 is a deficient number, since it is larger than the sum of its proper divisors (1).

8503971823 is an equidigital number, since it uses as much as digits as its factorization.

8503971823 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 362880, while the sum is 46.

The square root of 8503971823 is about 92216.9822917666. The cubic root of 8503971823 is about 2041.1453761976.

The spelling of 8503971823 in words is "eight billion, five hundred three million, nine hundred seventy-one thousand, eight hundred twenty-three".