3828428349769 has 3 divisors (see below), whose sum is σ = 3828430306407. Its totient is φ = 3828426393132.

The previous prime is 3828428349677. The next prime is 3828428349787. The reversal of 3828428349769 is 9679438248283.

The square root of 3828428349769 is 1956637.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in only one way, i.e., 2115962983225 + 1712465366544 = 1454635^2 + 1308612^2 .

It is not a de Polignac number, because 3828428349769 - 2³⁹ = 3278672535881 is a prime.

It is a super-2 number, since 2×3828428349769² (a number of 26 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3828428349269) by changing a digit.

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 2 ways as a sum of consecutive naturals, for example, 978319 + ... + 2934955.

It is an arithmetic number, because the mean of its divisors is an integer number (1276143435469).

Almost surely, 2^{3828428349769} is an apocalyptic number.

3828428349769 is the 1956637-th square number.

3828428349769 is the 978319-th centered octagonal number.

It is an amenable number.

3828428349769 is a deficient number, since it is larger than the sum of its proper divisors (1956638).

3828428349769 is an frugal number, since it uses more digits than its factorization.

3828428349769 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3913274 (or 1956637 counting only the distinct ones).

The product of its digits is 1003290624, while the sum is 73.

The spelling of 3828428349769 in words is "three trillion, eight hundred twenty-eight billion, four hundred twenty-eight million, three hundred forty-nine thousand, seven hundred sixty-nine".