4644945619 has 2 divisors, whose sum is σ = 4644945620. Its totient is φ = 4644945618.

The previous prime is 4644945607. The next prime is 4644945629. The reversal of 4644945619 is 9165494464.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 4644945619 - 2⁷ = 4644945491 is a prime.

It is a super-2 number, since 2×4644945619² = 43151039606934586322, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (4644945629) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2322472809 + 2322472810.

It is an arithmetic number, because the mean of its divisors is an integer number (2322472810).

Almost surely, 2^4644945619 is an apocalyptic number.

4644945619 is a deficient number, since it is larger than the sum of its proper divisors (1).

4644945619 is an equidigital number, since it uses as much as digits as its factorization.

4644945619 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3732480, while the sum is 52.

The square root of 4644945619 is about 68153.8378889993. The cubic root of 4644945619 is about 1668.5025623408.

The spelling of 4644945619 in words is "four billion, six hundred forty-four million, nine hundred forty-five thousand, six hundred nineteen".