2640220619 has 2 divisors, whose sum is σ = 2640220620. Its totient is φ = 2640220618.

The previous prime is 2640220607. The next prime is 2640220631. The reversal of 2640220619 is 9160220462.

It is a balanced prime because it is at equal distance from previous prime (2640220607) and next prime (2640220631).

It is a cyclic number.

It is not a de Polignac number, because 2640220619 - 2⁴ = 2640220603 is a prime.

It is a super-2 number, since 2×2640220619² = 13941529833985486322, which contains 22 as substring.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (2640220019) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1320110309 + 1320110310.

It is an arithmetic number, because the mean of its divisors is an integer number (1320110310).

Almost surely, 2^2640220619 is an apocalyptic number.

2640220619 is a deficient number, since it is larger than the sum of its proper divisors (1).

2640220619 is an equidigital number, since it uses as much as digits as its factorization.

2640220619 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10368, while the sum is 32.

The square root of 2640220619 is about 51383.0771655416. The cubic root of 2640220619 is about 1382.1231441890.

The spelling of 2640220619 in words is "two billion, six hundred forty million, two hundred twenty thousand, six hundred nineteen".