1385784360 has 48 divisors (see below), whose sum is σ = 4503800340. Its totient is φ = 369542400.

The previous prime is 1385784353. The next prime is 1385784373. The reversal of 1385784360 is 634875831.

1385784360 is a `hidden beast` number, since 1 + 38 + 578 + 43 + 6 + 0 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 1301622084 + 84162276 = 36078^2 + 9174^2 .

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1924341 + ... + 1925060.

Almost surely, 2^1385784360 is an apocalyptic number.

1385784360 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1385784360 is an abundant number, since it is smaller than the sum of its proper divisors (3118015980).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1385784360 is a wasteful number, since it uses less digits than its factorization.

1385784360 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3849418 (or 3849411 counting only the distinct ones).

The product of its (nonzero) digits is 483840, while the sum is 45.

The square root of 1385784360 is about 37226.1246975830. The cubic root of 1385784360 is about 1114.8896537290.

The spelling of 1385784360 in words is "one billion, three hundred eighty-five million, seven hundred eighty-four thousand, three hundred sixty".