2640098819 has 2 divisors, whose sum is σ = 2640098820. Its totient is φ = 2640098818.

The previous prime is 2640098807. The next prime is 2640098833. The reversal of 2640098819 is 9188900462.

2640098819 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2640098819 - 2²⁸ = 2371663363 is a prime.

It is a super-2 number, since 2×2640098819² = 13940243548170389522, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (2640098869) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1320049409 + 1320049410.

It is an arithmetic number, because the mean of its divisors is an integer number (1320049410).

Almost surely, 2^2640098819 is an apocalyptic number.

2640098819 is a deficient number, since it is larger than the sum of its proper divisors (1).

2640098819 is an equidigital number, since it uses as much as digits as its factorization.

2640098819 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 248832, while the sum is 47.

The square root of 2640098819 is about 51381.8919367514. The cubic root of 2640098819 is about 1382.1018902596.

The spelling of 2640098819 in words is "two billion, six hundred forty million, ninety-eight thousand, eight hundred nineteen".