194043995136 has 132 divisors (see below), whose sum is σ = 568191259584. Its totient is φ = 63770112000.

The previous prime is 194043995113. The next prime is 194043995191. The reversal of 194043995136 is 631599340491.

It is a happy number.

194043995136 is a `hidden beast` number, since 1 + 94 + 0 + 4 + 39 + 9 + 513 + 6 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 506061 + ... + 802611.

Almost surely, 2^194043995136 is an apocalyptic number.

194043995136 is a gapful number since it is divisible by the number (16) 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 194043995136, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (284095629792).

194043995136 is an abundant number, since it is smaller than the sum of its proper divisors (374147264448).

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

194043995136 is a wasteful number, since it uses less digits than its factorization.

194043995136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 296648 (or 296627 counting only the distinct ones).

The product of its (nonzero) digits is 3149280, while the sum is 54.

The spelling of 194043995136 in words is "one hundred ninety-four billion, forty-three million, nine hundred ninety-five thousand, one hundred thirty-six".