194873349728280 has 32 divisors (see below), whose sum is σ = 584620049185200. Its totient is φ = 51966226594176.

The previous prime is 194873349728251. The next prime is 194873349728311. The reversal of 194873349728280 is 82827943378491.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 811972290415 + ... + 811972290654.

Almost surely, 2^{194873349728280} is an apocalyptic number.

194873349728280 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

194873349728280 is an abundant number, since it is smaller than the sum of its proper divisors (389746699456920).

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

194873349728280 is a wasteful number, since it uses less digits than its factorization.

194873349728280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1623944581083 (or 1623944581079 counting only the distinct ones).

The product of its (nonzero) digits is 1170505728, while the sum is 75.

The spelling of 194873349728280 in words is "one hundred ninety-four trillion, eight hundred seventy-three billion, three hundred forty-nine million, seven hundred twenty-eight thousand, two hundred eighty".