194485975408 has 10 divisors (see below), whose sum is σ = 376816577384. Its totient is φ = 97242987696.

The previous prime is 194485975403. The next prime is 194485975421. The reversal of 194485975408 is 804579584491.

It is a self number, because there is not a number n which added to its sum of digits gives 194485975408.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (194485975403) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6077686716 + ... + 6077686747.

Almost surely, 2^194485975408 is an apocalyptic number.

It is an amenable number.

194485975408 is a deficient number, since it is larger than the sum of its proper divisors (182330601976).

194485975408 is a wasteful number, since it uses less digits than its factorization.

194485975408 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12155373471 (or 12155373465 counting only the distinct ones).

The product of its (nonzero) digits is 58060800, while the sum is 64.

The spelling of 194485975408 in words is "one hundred ninety-four billion, four hundred eighty-five million, nine hundred seventy-five thousand, four hundred eight".