191782975488 has 192 divisors, whose sum is σ = 551395353600. Its totient is φ = 58927841280.

The previous prime is 191782975487. The next prime is 191782975493. The reversal of 191782975488 is 884579287191.

It is a tau number, because it is divible by the number of its divisors (192).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (191782975481) by changing a digit.

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, 82985853 + ... + 82988163.

It is an arithmetic number, because the mean of its divisors is an integer number (2871850800).

Almost surely, 2^191782975488 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 191782975488, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (275697676800).

191782975488 is an abundant number, since it is smaller than the sum of its proper divisors (359612378112).

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

191782975488 is a wasteful number, since it uses less digits than its factorization.

191782975488 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3388 (or 3368 counting only the distinct ones).

The product of its digits is 81285120, while the sum is 69.

The spelling of 191782975488 in words is "one hundred ninety-one billion, seven hundred eighty-two million, nine hundred seventy-five thousand, four hundred eighty-eight".