194992004478 has 64 divisors (see below), whose sum is σ = 396469075968. Its totient is φ = 63927208800.

The previous prime is 194992004437. The next prime is 194992004507. The reversal of 194992004478 is 874400299491.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 67539951 + ... + 67542837.

It is an arithmetic number, because the mean of its divisors is an integer number (6194829312).

Almost surely, 2^194992004478 is an apocalyptic number.

194992004478 is an abundant number, since it is smaller than the sum of its proper divisors (201477071490).

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

194992004478 is a wasteful number, since it uses less digits than its factorization.

194992004478 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3757.

The product of its (nonzero) digits is 5225472, while the sum is 57.

The spelling of 194992004478 in words is "one hundred ninety-four billion, nine hundred ninety-two million, four thousand, four hundred seventy-eight".