6445780119 has 8 divisors (see below), whose sum is σ = 9549303920. Its totient is φ = 4297186728.

The previous prime is 6445780111. The next prime is 6445780139. The reversal of 6445780119 is 9110875446.

6445780119 is a `hidden beast` number, since 6 + 4 + 457 + 80 + 119 = 666.

6445780119 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 6445780119 - 2³ = 6445780111 is a prime.

It is a super-2 number, since 2×6445780119² = 83096162684991308322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6445780111) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 119366272 + ... + 119366325.

It is an arithmetic number, because the mean of its divisors is an integer number (1193662990).

Almost surely, 2^6445780119 is an apocalyptic number.

6445780119 is a deficient number, since it is larger than the sum of its proper divisors (3103523801).

6445780119 is a wasteful number, since it uses less digits than its factorization.

6445780119 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 238732606 (or 238732600 counting only the distinct ones).

The product of its (nonzero) digits is 241920, while the sum is 45.

The square root of 6445780119 is about 80285.6158910175. The cubic root of 6445780119 is about 1861.0519465694.

The spelling of 6445780119 in words is "six billion, four hundred forty-five million, seven hundred eighty thousand, one hundred nineteen".