194140992 has 56 divisors (see below), whose sum is σ = 518704576. Its totient is φ = 64078848.

The previous prime is 194140981. The next prime is 194140997. The reversal of 194140992 is 299041491.

It is a self number, because there is not a number n which added to its sum of digits gives 194140992.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (194140997) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14868 + ... + 24684.

Almost surely, 2^194140992 is an apocalyptic number.

194140992 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 194140992, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (259352288).

194140992 is an abundant number, since it is smaller than the sum of its proper divisors (324563584).

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

194140992 is a wasteful number, since it uses less digits than its factorization.

194140992 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9935 (or 9925 counting only the distinct ones).

The product of its (nonzero) digits is 23328, while the sum is 39.

The square root of 194140992 is about 13933.4486757586. The cubic root of 194140992 is about 579.0362432979.

The spelling of 194140992 in words is "one hundred ninety-four million, one hundred forty thousand, nine hundred ninety-two".