194540500 has 192 divisors, whose sum is σ = 550158336. Its totient is φ = 58320000.

The previous prime is 194540491. The next prime is 194540513. The reversal of 194540500 is 5045491.

It is a super-2 number, since 2×194540500² = 75692012280500000, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1193419 + ... + 1193581.

It is an arithmetic number, because the mean of its divisors is an integer number (2865408).

Almost surely, 2^194540500 is an apocalyptic number.

194540500 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 194540500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (275079168).

194540500 is an abundant number, since it is smaller than the sum of its proper divisors (355617836).

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

194540500 is a wasteful number, since it uses less digits than its factorization.

194540500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 231 (or 219 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 28.

The square root of 194540500 is about 13947.7776007506. Note that the first 3 decimals coincide. The cubic root of 194540500 is about 579.4331560634.

Adding to 194540500 its reverse (5045491), we get a palindrome (199585991).

The spelling of 194540500 in words is "one hundred ninety-four million, five hundred forty thousand, five hundred".