1385784922 has 8 divisors (see below), whose sum is σ = 2080716372. Its totient is φ = 692212800.

The previous prime is 1385784889. The next prime is 1385784947. The reversal of 1385784922 is 2294875831.

It can be written as a sum of positive squares in 2 ways, for example, as 1233484641 + 152300281 = 35121^2 + 12341^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 337279 + ... + 341362.

Almost surely, 2^1385784922 is an apocalyptic number.

1385784922 is a deficient number, since it is larger than the sum of its proper divisors (694931450).

1385784922 is a wasteful number, since it uses less digits than its factorization.

1385784922 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 679664.

The product of its digits is 967680, while the sum is 49.

The square root of 1385784922 is about 37226.1322460446. The cubic root of 1385784922 is about 1114.8898044422.

Subtracting 1385784922 from its reverse (2294875831), we obtain a palindrome (909090909).

The spelling of 1385784922 in words is "one billion, three hundred eighty-five million, seven hundred eighty-four thousand, nine hundred twenty-two".