6450140189 has 2 divisors, whose sum is σ = 6450140190. Its totient is φ = 6450140188.

The previous prime is 6450140149. The next prime is 6450140219. The reversal of 6450140189 is 9810410546.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6378737689 + 71402500 = 79867^2 + 8450^2 .

It is a cyclic number.

It is not a de Polignac number, because 6450140189 - 2²⁰ = 6449091613 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6450140149) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3225070094 + 3225070095.

It is an arithmetic number, because the mean of its divisors is an integer number (3225070095).

Almost surely, 2^6450140189 is an apocalyptic number.

It is an amenable number.

6450140189 is a deficient number, since it is larger than the sum of its proper divisors (1).

6450140189 is an equidigital number, since it uses as much as digits as its factorization.

6450140189 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 34560, while the sum is 38.

The square root of 6450140189 is about 80312.7647948942. The cubic root of 6450140189 is about 1861.4714710609.

The spelling of 6450140189 in words is "six billion, four hundred fifty million, one hundred forty thousand, one hundred eighty-nine".