4638390971519 has 2 divisors, whose sum is σ = 4638390971520. Its totient is φ = 4638390971518.

The previous prime is 4638390971503. The next prime is 4638390971651. The reversal of 4638390971519 is 9151790938364.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 4638390971519 - 2⁴ = 4638390971503 is a prime.

It is a super-2 number, since 2×4638390971519² (a number of 26 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4638390971219) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2319195485759 + 2319195485760.

It is an arithmetic number, because the mean of its divisors is an integer number (2319195485760).

Almost surely, 2^{4638390971519} is an apocalyptic number.

4638390971519 is a deficient number, since it is larger than the sum of its proper divisors (1).

4638390971519 is an equidigital number, since it uses as much as digits as its factorization.

4638390971519 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 44089920, while the sum is 65.

The spelling of 4638390971519 in words is "four trillion, six hundred thirty-eight billion, three hundred ninety million, nine hundred seventy-one thousand, five hundred nineteen".