1384705920 has 256 divisors, whose sum is σ = 4919745600. Its totient is φ = 328925184.

The previous prime is 1384705919. The next prime is 1384705937. The reversal of 1384705920 is 295074831.

It is a hoax number, since the sum of its digits (39) 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 (39).

It is a congruent number.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 722884 + ... + 724796.

Almost surely, 2^1384705920 is an apocalyptic number.

1384705920 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 1384705920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2459872800).

1384705920 is an abundant number, since it is smaller than the sum of its proper divisors (3535039680).

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

1384705920 is a wasteful number, since it uses less digits than its factorization.

1384705920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1977 (or 1965 counting only the distinct ones).

The product of its (nonzero) digits is 60480, while the sum is 39.

The square root of 1384705920 is about 37211.6368895538. The cubic root of 1384705920 is about 1114.6003702344.

The spelling of 1384705920 in words is "one billion, three hundred eighty-four million, seven hundred five thousand, nine hundred twenty".