1389273875730 has 640 divisors, whose sum is σ = 4531091685120. Its totient is φ = 301703823360.

The previous prime is 1389273875729. The next prime is 1389273875767. The reversal of 1389273875730 is 375783729831.

1389273875730 is a `hidden beast` number, since 1 + 3 + 8 + 9 + 27 + 38 + 7 + 573 + 0 = 666.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 319 ways as a sum of consecutive naturals, for example, 329913325 + ... + 329917535.

It is an arithmetic number, because the mean of its divisors is an integer number (7079830758).

Almost surely, 2^{1389273875730} is an apocalyptic number.

1389273875730 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1389273875730, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2265545842560).

1389273875730 is an abundant number, since it is smaller than the sum of its proper divisors (3141817809390).

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

1389273875730 is a wasteful number, since it uses less digits than its factorization.

1389273875730 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4376 (or 4367 counting only the distinct ones).

The product of its (nonzero) digits is 53343360, while the sum is 63.

The spelling of 1389273875730 in words is "one trillion, three hundred eighty-nine billion, two hundred seventy-three million, eight hundred seventy-five thousand, seven hundred thirty".