2640250919 has 2 divisors, whose sum is σ = 2640250920. Its totient is φ = 2640250918.

The previous prime is 2640250903. The next prime is 2640250931. The reversal of 2640250919 is 9190520462.

2640250919 is digitally balanced in base 2, 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 2640250919 - 2⁴ = 2640250903 is a prime.

It is a super-2 number, since 2×2640250919² = 13941849830560689122, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2640250969) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1320125459 + 1320125460.

It is an arithmetic number, because the mean of its divisors is an integer number (1320125460).

Almost surely, 2^2640250919 is an apocalyptic number.

2640250919 is a deficient number, since it is larger than the sum of its proper divisors (1).

2640250919 is an equidigital number, since it uses as much as digits as its factorization.

2640250919 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 38880, while the sum is 38.

The square root of 2640250919 is about 51383.3720088513. The cubic root of 2640250919 is about 1382.1284313950.

The spelling of 2640250919 in words is "two billion, six hundred forty million, two hundred fifty thousand, nine hundred nineteen".