194040292140 has 144 divisors (see below), whose sum is σ = 604762206048. Its totient is φ = 50323479552.

The previous prime is 194040292133. The next prime is 194040292169. The reversal of 194040292140 is 41292040491.

194040292140 is a `hidden beast` number, since 19 + 404 + 0 + 29 + 214 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 194040292095 and 194040292104.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 19728664 + ... + 19738496.

It is an arithmetic number, because the mean of its divisors is an integer number (4199737542).

Almost surely, 2^194040292140 is an apocalyptic number.

194040292140 is a gapful number since it is divisible by the number (10) 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 194040292140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (302381103024).

194040292140 is an abundant number, since it is smaller than the sum of its proper divisors (410721913908).

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

194040292140 is a wasteful number, since it uses less digits than its factorization.

194040292140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12848 (or 12843 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 36.

The spelling of 194040292140 in words is "one hundred ninety-four billion, forty million, two hundred ninety-two thousand, one hundred forty".