1428205465819 has 8 divisors (see below), whose sum is σ = 1558070254512. Its totient is φ = 1298345331840.

The previous prime is 1428205465807. The next prime is 1428205465853. The reversal of 1428205465819 is 9185645028241.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1428205465819 - 2³⁹ = 878449651931 is a prime.

It is a super-2 number, since 2×1428205465819² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1428205465819.

It is not an unprimeable number, because it can be changed into a prime (1428205460819) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 505954 + ... + 1764199.

It is an arithmetic number, because the mean of its divisors is an integer number (194758781814).

Almost surely, 2^{1428205465819} is an apocalyptic number.

1428205465819 is a deficient number, since it is larger than the sum of its proper divisors (129864788693).

1428205465819 is a wasteful number, since it uses less digits than its factorization.

1428205465819 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2327357.

The product of its (nonzero) digits is 5529600, while the sum is 55.

The spelling of 1428205465819 in words is "one trillion, four hundred twenty-eight billion, two hundred five million, four hundred sixty-five thousand, eight hundred nineteen".