191996952048 has 160 divisors (see below), whose sum is σ = 605938360320. Its totient is φ = 57722595840.

The previous prime is 191996952029. The next prime is 191996952061. The reversal of 191996952048 is 840259699191.

191996952048 is a `hidden beast` number, since 1 + 9 + 1 + 9 + 9 + 69 + 520 + 48 = 666.

It is a super-2 number, since 2×191996952048² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 444436 + ... + 762572.

It is an arithmetic number, because the mean of its divisors is an integer number (3787114752).

Almost surely, 2^191996952048 is an apocalyptic number.

191996952048 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 191996952048, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (302969180160).

191996952048 is an abundant number, since it is smaller than the sum of its proper divisors (413941408272).

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

191996952048 is a wasteful number, since it uses less digits than its factorization.

191996952048 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 318292 (or 318280 counting only the distinct ones).

The product of its (nonzero) digits is 12597120, while the sum is 63.

The spelling of 191996952048 in words is "one hundred ninety-one billion, nine hundred ninety-six million, nine hundred fifty-two thousand, forty-eight".