1385784359 has 4 divisors (see below), whose sum is σ = 1467301104. Its totient is φ = 1304267616.

The previous prime is 1385784353. The next prime is 1385784373. The reversal of 1385784359 is 9534875831.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1385784359 is a prime.

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 1385784359.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1385784353) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 40758347 + ... + 40758380.

It is an arithmetic number, because the mean of its divisors is an integer number (366825276).

Almost surely, 2^1385784359 is an apocalyptic number.

1385784359 is a deficient number, since it is larger than the sum of its proper divisors (81516745).

1385784359 is an equidigital number, since it uses as much as digits as its factorization.

1385784359 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81516744.

The product of its digits is 3628800, while the sum is 53.

The square root of 1385784359 is about 37226.1246841516. The cubic root of 1385784359 is about 1114.8896534608.

The spelling of 1385784359 in words is "one billion, three hundred eighty-five million, seven hundred eighty-four thousand, three hundred fifty-nine".