8140019807 has 4 divisors (see below), whose sum is σ = 8149839720. Its totient is φ = 8130199896.

The previous prime is 8140019801. The next prime is 8140019819. The reversal of 8140019807 is 7089100418.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7089100418 = 2 ⋅3544550209.

It is a cyclic number.

It is not a de Polignac number, because 8140019807 - 2⁴ = 8140019791 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8140019801) 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, 4908713 + ... + 4910370.

It is an arithmetic number, because the mean of its divisors is an integer number (2037459930).

Almost surely, 2^8140019807 is an apocalyptic number.

8140019807 is a deficient number, since it is larger than the sum of its proper divisors (9819913).

8140019807 is an equidigital number, since it uses as much as digits as its factorization.

8140019807 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9819912.

The product of its (nonzero) digits is 16128, while the sum is 38.

The square root of 8140019807 is about 90222.0583172430. The cubic root of 8140019807 is about 2011.6008967425.

The spelling of 8140019807 in words is "eight billion, one hundred forty million, nineteen thousand, eight hundred seven".