1389019320 has 512 divisors, whose sum is σ = 5419008000. Its totient is φ = 313528320.

The previous prime is 1389019319. The next prime is 1389019337. The reversal of 1389019320 is 239109831.

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

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 127 ways as a sum of consecutive naturals, for example, 10937097 + ... + 10937223.

It is an arithmetic number, because the mean of its divisors is an integer number (10584000).

Almost surely, 2^1389019320 is an apocalyptic number.

1389019320 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 1389019320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2709504000).

1389019320 is an abundant number, since it is smaller than the sum of its proper divisors (4029988680).

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

1389019320 is a wasteful number, since it uses less digits than its factorization.

1389019320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 220 (or 210 counting only the distinct ones).

The product of its (nonzero) digits is 11664, while the sum is 36.

The square root of 1389019320 is about 37269.5495008995. The cubic root of 1389019320 is about 1115.7565083304.

The spelling of 1389019320 in words is "one billion, three hundred eighty-nine million, nineteen thousand, three hundred twenty".