194884138152 has 144 divisors (see below), whose sum is σ = 580439408640. Its totient is φ = 59026968000.

The previous prime is 194884138087. The next prime is 194884138159. The reversal of 194884138152 is 251831488491.

194884138152 is a `hidden beast` number, since 1 + 9 + 488 + 4 + 1 + 3 + 8 + 152 = 666.

It is not an unprimeable number, because it can be changed into a prime (194884138159) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 23788377 + ... + 23796567.

Almost surely, 2^194884138152 is an apocalyptic number.

194884138152 is a gapful number since it is divisible by the number (12) 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 194884138152, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (290219704320).

194884138152 is an abundant number, since it is smaller than the sum of its proper divisors (385555270488).

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

194884138152 is a wasteful number, since it uses less digits than its factorization.

194884138152 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10956 (or 10938 counting only the distinct ones).

The product of its digits is 2211840, while the sum is 54.

The spelling of 194884138152 in words is "one hundred ninety-four billion, eight hundred eighty-four million, one hundred thirty-eight thousand, one hundred fifty-two".