1384645824 has 126 divisors (see below), whose sum is σ = 4189346460. Its totient is φ = 437190912.

The previous prime is 1384645817. The next prime is 1384645841. The reversal of 1384645824 is 4285464831.

1384645824 is a `hidden beast` number, since 1 + 3 + 8 + 4 + 64 + 582 + 4 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 1384645824.

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 204607 + ... + 211265.

Almost surely, 2^1384645824 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1384645824, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2094673230).

1384645824 is an abundant number, since it is smaller than the sum of its proper divisors (2804700636).

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

1384645824 is a wasteful number, since it uses less digits than its factorization.

1384645824 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6715 (or 6683 counting only the distinct ones).

The product of its digits is 737280, while the sum is 45.

The square root of 1384645824 is about 37210.8293914554. The cubic root of 1384645824 is about 1114.5842455127.

The spelling of 1384645824 in words is "one billion, three hundred eighty-four million, six hundred forty-five thousand, eight hundred twenty-four".