1428944165 has 8 divisors (see below), whose sum is σ = 1870617888. Its totient is φ = 1039232080.

The previous prime is 1428944147. The next prime is 1428944203. The reversal of 1428944165 is 5614498241.

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

It is not a de Polignac number, because 1428944165 - 2⁸ = 1428943909 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 (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12990347 + ... + 12990456.

It is an arithmetic number, because the mean of its divisors is an integer number (233827236).

Almost surely, 2^1428944165 is an apocalyptic number.

It is an amenable number.

1428944165 is a deficient number, since it is larger than the sum of its proper divisors (441673723).

1428944165 is a wasteful number, since it uses less digits than its factorization.

1428944165 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25980819.

The product of its digits is 276480, while the sum is 44.

The square root of 1428944165 is about 37801.3778188044. The cubic root of 1428944165 is about 1126.3458237687.

The spelling of 1428944165 in words is "one billion, four hundred twenty-eight million, nine hundred forty-four thousand, one hundred sixty-five".