6466149139 has 2 divisors, whose sum is σ = 6466149140. Its totient is φ = 6466149138.

The previous prime is 6466149097. The next prime is 6466149149. The reversal of 6466149139 is 9319416646.

It is a happy number.

6466149139 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 6466149139 - 2¹¹ = 6466147091 is a prime.

It is a super-2 number, since 2×6466149139² = 83622169375580882642, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 6466149092 and 6466149101.

It is not a weakly prime, because it can be changed into another prime (6466149149) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3233074569 + 3233074570.

It is an arithmetic number, because the mean of its divisors is an integer number (3233074570).

Almost surely, 2^6466149139 is an apocalyptic number.

6466149139 is a deficient number, since it is larger than the sum of its proper divisors (1).

6466149139 is an equidigital number, since it uses as much as digits as its factorization.

6466149139 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 839808, while the sum is 49.

The square root of 6466149139 is about 80412.3693159205. The cubic root of 6466149139 is about 1863.0102274564.

The spelling of 6466149139 in words is "six billion, four hundred sixty-six million, one hundred forty-nine thousand, one hundred thirty-nine".