1428197065 has 8 divisors (see below), whose sum is σ = 1730805768. Its totient is φ = 1131244800.

The previous prime is 1428197051. The next prime is 1428197083. The reversal of 1428197065 is 5607918241.

It can be written as a sum of positive squares in 4 ways, for example, as 148060224 + 1280136841 = 12168^2 + 35779^2 .

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

It is not a de Polignac number, because 1428197065 - 2¹⁷ = 1428065993 is a prime.

It is a super-2 number, since 2×1428197065² = 4079493712949228450, which contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1413552 + ... + 1414561.

It is an arithmetic number, because the mean of its divisors is an integer number (216350721).

Almost surely, 2^1428197065 is an apocalyptic number.

It is an amenable number.

1428197065 is a deficient number, since it is larger than the sum of its proper divisors (302608703).

1428197065 is a wasteful number, since it uses less digits than its factorization.

1428197065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2828219.

The product of its (nonzero) digits is 120960, while the sum is 43.

The square root of 1428197065 is about 37791.4946118832. The cubic root of 1428197065 is about 1126.1494924070.

The spelling of 1428197065 in words is "one billion, four hundred twenty-eight million, one hundred ninety-seven thousand, sixty-five".