1384526520 has 192 divisors, whose sum is σ = 5025777120. Its totient is φ = 340775424.

The previous prime is 1384526519. The next prime is 1384526527. The reversal of 1384526520 is 256254831.

1384526520 is a `hidden beast` number, since 1 + 3 + 84 + 52 + 6 + 520 = 666.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1384526527) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 120882 + ... + 131838.

Almost surely, 2^1384526520 is an apocalyptic number.

1384526520 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1384526520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2512888560).

1384526520 is an abundant number, since it is smaller than the sum of its proper divisors (3641250600).

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

1384526520 is a wasteful number, since it uses less digits than its factorization.

1384526520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10996 (or 10980 counting only the distinct ones).

The product of its (nonzero) digits is 57600, while the sum is 36.

The square root of 1384526520 is about 37209.2262752130. The cubic root of 1384526520 is about 1114.5522329514.

The spelling of 1384526520 in words is "one billion, three hundred eighty-four million, five hundred twenty-six thousand, five hundred twenty".