8513040191 has 2 divisors, whose sum is σ = 8513040192. Its totient is φ = 8513040190.

The previous prime is 8513040157. The next prime is 8513040247. The reversal of 8513040191 is 1910403158.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-8513040191 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8513040101) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4256520095 + 4256520096.

It is an arithmetic number, because the mean of its divisors is an integer number (4256520096).

Almost surely, 2^8513040191 is an apocalyptic number.

8513040191 is a deficient number, since it is larger than the sum of its proper divisors (1).

8513040191 is an equidigital number, since it uses as much as digits as its factorization.

8513040191 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4320, while the sum is 32.

The square root of 8513040191 is about 92266.1378350693. The cubic root of 8513040191 is about 2041.8706561902.

The spelling of 8513040191 in words is "eight billion, five hundred thirteen million, forty thousand, one hundred ninety-one".