8018140489 has 2 divisors, whose sum is σ = 8018140490. Its totient is φ = 8018140488.

The previous prime is 8018140453. The next prime is 8018140511. The reversal of 8018140489 is 9840418108.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4278206464 + 3739934025 = 65408^2 + 61155^2 .

It is a cyclic number.

It is not a de Polignac number, because 8018140489 - 2²³ = 8009751881 is a prime.

It is not a weakly prime, because it can be changed into another prime (8018110489) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4009070244 + 4009070245.

It is an arithmetic number, because the mean of its divisors is an integer number (4009070245).

Almost surely, 2^8018140489 is an apocalyptic number.

It is an amenable number.

8018140489 is a deficient number, since it is larger than the sum of its proper divisors (1).

8018140489 is an equidigital number, since it uses as much as digits as its factorization.

8018140489 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 73728, while the sum is 43.

The square root of 8018140489 is about 89544.0700940045. The cubic root of 8018140489 is about 2001.5105662243.

The spelling of 8018140489 in words is "eight billion, eighteen million, one hundred forty thousand, four hundred eighty-nine".