1389109079610 has 1152 divisors, whose sum is σ = 4904628019200. Its totient is φ = 280647037440.

The previous prime is 1389109079563. The next prime is 1389109079623. The reversal of 1389109079610 is 169709019831.

It is a happy number.

1389109079610 is a `hidden beast` number, since 1 + 3 + 8 + 9 + 10 + 9 + 0 + 7 + 9 + 610 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 575 ways as a sum of consecutive naturals, for example, 2033834329 + ... + 2033835011.

It is an arithmetic number, because the mean of its divisors is an integer number (4257489600).

Almost surely, 2^{1389109079610} is an apocalyptic number.

1389109079610 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 1389109079610, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2452314009600).

1389109079610 is an abundant number, since it is smaller than the sum of its proper divisors (3515518939590).

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

1389109079610 is a wasteful number, since it uses less digits than its factorization.

1389109079610 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 798 (or 779 counting only the distinct ones).

The product of its (nonzero) digits is 734832, while the sum is 54.

The spelling of 1389109079610 in words is "one trillion, three hundred eighty-nine billion, one hundred nine million, seventy-nine thousand, six hundred ten".