2640219047 has 2 divisors, whose sum is σ = 2640219048. Its totient is φ = 2640219046.

The previous prime is 2640219007. The next prime is 2640219053. The reversal of 2640219047 is 7409120462.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2640219047 is a prime.

It is a super-2 number, since 2×2640219047² = 13941513232283176418, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2640218998 and 2640219016.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2640219007) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1320109523 + 1320109524.

It is an arithmetic number, because the mean of its divisors is an integer number (1320109524).

Almost surely, 2^2640219047 is an apocalyptic number.

2640219047 is a deficient number, since it is larger than the sum of its proper divisors (1).

2640219047 is an equidigital number, since it uses as much as digits as its factorization.

2640219047 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 24192, while the sum is 35.

The square root of 2640219047 is about 51383.0618686742. The cubic root of 2640219047 is about 1382.1228698814.

The spelling of 2640219047 in words is "two billion, six hundred forty million, two hundred nineteen thousand, forty-seven".