1384529785 has 8 divisors (see below), whose sum is σ = 1662744456. Its totient is φ = 1106751360.

The previous prime is 1384529771. The next prime is 1384529801. The reversal of 1384529785 is 5879254831.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 78357904 + 1306171881 = 8852^2 + 36141^2 .

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

It is not a de Polignac number, because 1384529785 - 2¹¹ = 1384527737 is a prime.

It is a Duffinian 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, 102036 + ... + 114805.

It is an arithmetic number, because the mean of its divisors is an integer number (207843057).

Almost surely, 2^1384529785 is an apocalyptic number.

It is an amenable number.

1384529785 is a deficient number, since it is larger than the sum of its proper divisors (278214671).

1384529785 is a wasteful number, since it uses less digits than its factorization.

1384529785 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 218123.

The product of its digits is 2419200, while the sum is 52.

The square root of 1384529785 is about 37209.2701487143. The cubic root of 1384529785 is about 1114.5531090656.

The spelling of 1384529785 in words is "one billion, three hundred eighty-four million, five hundred twenty-nine thousand, seven hundred eighty-five".