4687938397819 has 2 divisors, whose sum is σ = 4687938397820. Its totient is φ = 4687938397818.

The previous prime is 4687938397817. The next prime is 4687938397913. The reversal of 4687938397819 is 9187938397864.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 4687938397819 - 2¹ = 4687938397817 is a prime.

It is a super-4 number, since 4×4687938397819⁴ (a number of 52 digits) contains 4444 as substring. Note that it is a super-d number also for d = 2.

Together with 4687938397817, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (4687938397817) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2343969198909 + 2343969198910.

It is an arithmetic number, because the mean of its divisors is an integer number (2343969198910).

Almost surely, 2^{4687938397819} is an apocalyptic number.

4687938397819 is a deficient number, since it is larger than the sum of its proper divisors (1).

4687938397819 is an equidigital number, since it uses as much as digits as its factorization.

4687938397819 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3950456832, while the sum is 82.

The spelling of 4687938397819 in words is "four trillion, six hundred eighty-seven billion, nine hundred thirty-eight million, three hundred ninety-seven thousand, eight hundred nineteen".