389289263136 has 96 divisors (see below), whose sum is σ = 1053441184320. Its totient is φ = 125816131584.

The previous prime is 389289263107. The next prime is 389289263137. The reversal of 389289263136 is 631362982983.

It is a tau number, because it is divible by the number of its divisors (96).

It is a super-2 number, since 2×389289263136² (a number of 24 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (60) coincides with the sum of the digits of its prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 389289263136.

It is not an unprimeable number, because it can be changed into a prime (389289263137) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 57285 + ... + 884228.

It is an arithmetic number, because the mean of its divisors is an integer number (10973345670).

Almost surely, 2^389289263136 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 389289263136, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (526720592160).

389289263136 is an abundant number, since it is smaller than the sum of its proper divisors (664151921184).

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

389289263136 is a wasteful number, since it uses less digits than its factorization.

389289263136 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 941658 (or 941650 counting only the distinct ones).

The product of its digits is 20155392, while the sum is 60.

The spelling of 389289263136 in words is "three hundred eighty-nine billion, two hundred eighty-nine million, two hundred sixty-three thousand, one hundred thirty-six".