189312660992 has 160 divisors (see below), whose sum is σ = 480566575104. Its totient is φ = 72476467200.

The previous prime is 189312660973. The next prime is 189312661009. The reversal of 189312660992 is 299066213981.

It is a super-2 number, since 2×189312660992² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (56).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1378817 + ... + 1509887.

Almost surely, 2^189312660992 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 189312660992, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (240283287552).

189312660992 is an abundant number, since it is smaller than the sum of its proper divisors (291253914112).

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

189312660992 is a wasteful number, since it uses less digits than its factorization.

189312660992 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 131140 (or 131124 counting only the distinct ones).

The product of its (nonzero) digits is 2519424, while the sum is 56.

The spelling of 189312660992 in words is "one hundred eighty-nine billion, three hundred twelve million, six hundred sixty thousand, nine hundred ninety-two".