189012969288 has 320 divisors, whose sum is σ = 622846667520. Its totient is φ = 52795929600.

The previous prime is 189012969283. The next prime is 189012969289. The reversal of 189012969288 is 882969210981.

189012969288 is a `hidden beast` number, since 189 + 0 + 1 + 296 + 92 + 88 = 666.

It is not an unprimeable number, because it can be changed into a prime (189012969281) by changing a digit.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 114068556 + ... + 114070212.

It is an arithmetic number, because the mean of its divisors is an integer number (1946395836).

Almost surely, 2^189012969288 is an apocalyptic number.

189012969288 is a gapful number since it is divisible by the number (18) 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 189012969288, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (311423333760).

189012969288 is an abundant number, since it is smaller than the sum of its proper divisors (433833698232).

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

189012969288 is a wasteful number, since it uses less digits than its factorization.

189012969288 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2930 (or 2917 counting only the distinct ones).

The product of its (nonzero) digits is 8957952, while the sum is 63.

The spelling of 189012969288 in words is "one hundred eighty-nine billion, twelve million, nine hundred sixty-nine thousand, two hundred eighty-eight".