194780646468 has 72 divisors (see below), whose sum is σ = 530328999200. Its totient is φ = 60079211136.

The previous prime is 194780646443. The next prime is 194780646527. The reversal of 194780646468 is 864646087491.

194780646468 is a `hidden beast` number, since 1 + 94 + 7 + 80 + 6 + 4 + 6 + 468 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3281833 + ... + 3340656.

Almost surely, 2^194780646468 is an apocalyptic number.

194780646468 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

194780646468 is an abundant number, since it is smaller than the sum of its proper divisors (335548352732).

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

194780646468 is a wasteful number, since it uses less digits than its factorization.

194780646468 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6622561 (or 6622556 counting only the distinct ones).

The product of its (nonzero) digits is 55738368, while the sum is 63.

The spelling of 194780646468 in words is "one hundred ninety-four billion, seven hundred eighty million, six hundred forty-six thousand, four hundred sixty-eight".