1389691883520 has 1664 divisors, whose sum is σ = 5571033292800. Its totient is φ = 331085905920.

The previous prime is 1389691883509. The next prime is 1389691883563. The reversal of 1389691883520 is 253881969831.

1389691883520 is a `hidden beast` number, since 1 + 3 + 8 + 96 + 9 + 18 + 8 + 3 + 520 = 666.

It is a super-2 number, since 2×1389691883520² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 19573125085 + ... + 19573125155.

Almost surely, 2^{1389691883520} is an apocalyptic number.

1389691883520 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 1389691883520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2785516646400).

1389691883520 is an abundant number, since it is smaller than the sum of its proper divisors (4181341409280).

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

1389691883520 is an frugal number, since it uses more digits than its factorization.

1389691883520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 163 (or 123 counting only the distinct ones).

The product of its (nonzero) digits is 22394880, while the sum is 63.

The spelling of 1389691883520 in words is "one trillion, three hundred eighty-nine billion, six hundred ninety-one million, eight hundred eighty-three thousand, five hundred twenty".