6140451209 has 2 divisors, whose sum is σ = 6140451210. Its totient is φ = 6140451208.

The previous prime is 6140451203. The next prime is 6140451211. The reversal of 6140451209 is 9021540416.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6135275584 + 5175625 = 78328^2 + 2275^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6140451209 is a prime.

Together with 6140451211, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (6140451203) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3070225604 + 3070225605.

It is an arithmetic number, because the mean of its divisors is an integer number (3070225605).

Almost surely, 2^6140451209 is an apocalyptic number.

It is an amenable number.

6140451209 is a deficient number, since it is larger than the sum of its proper divisors (1).

6140451209 is an equidigital number, since it uses as much as digits as its factorization.

6140451209 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8640, while the sum is 32.

The square root of 6140451209 is about 78361.0311889781. The cubic root of 6140451209 is about 1831.1900854817.

The spelling of 6140451209 in words is "six billion, one hundred forty million, four hundred fifty-one thousand, two hundred nine".