191945299152 has 20 divisors (see below), whose sum is σ = 495858689600. Its totient is φ = 63981766368.

The previous prime is 191945299141. The next prime is 191945299157. The reversal of 191945299152 is 251992549191.

191945299152 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 191945299092 and 191945299101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (191945299157) 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 3 ways as a sum of consecutive naturals, for example, 1999430152 + ... + 1999430247.

It is an arithmetic number, because the mean of its divisors is an integer number (24792934480).

Almost surely, 2^191945299152 is an apocalyptic number.

191945299152 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

191945299152 is an abundant number, since it is smaller than the sum of its proper divisors (303913390448).

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

191945299152 is a wasteful number, since it uses less digits than its factorization.

191945299152 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3998860410 (or 3998860404 counting only the distinct ones).

The product of its digits is 2624400, while the sum is 57.

The spelling of 191945299152 in words is "one hundred ninety-one billion, nine hundred forty-five million, two hundred ninety-nine thousand, one hundred fifty-two".