4819381898405 has 4 divisors (see below), whose sum is σ = 5783258278092. Its totient is φ = 3855505518720.

The previous prime is 4819381898393. The next prime is 4819381898477. The reversal of 4819381898405 is 5048981839184.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1856790494881 + 2962591403524 = 1362641^2 + 1721218^2 .

It is not a de Polignac number, because 4819381898405 - 2¹⁸ = 4819381636261 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 481938189836 + ... + 481938189845.

It is an arithmetic number, because the mean of its divisors is an integer number (1445814569523).

Almost surely, 2^{4819381898405} is an apocalyptic number.

It is an amenable number.

4819381898405 is a deficient number, since it is larger than the sum of its proper divisors (963876379687).

4819381898405 is an equidigital number, since it uses as much as digits as its factorization.

4819381898405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 963876379686.

The product of its (nonzero) digits is 79626240, while the sum is 68.

The spelling of 4819381898405 in words is "four trillion, eight hundred nineteen billion, three hundred eighty-one million, eight hundred ninety-eight thousand, four hundred five".