194707031904 has 864 divisors, whose sum is σ = 733598208000. Its totient is φ = 50055667200.

The previous prime is 194707031879. The next prime is 194707032011. The reversal of 194707031904 is 409130707491.

It is a tau number, because it is divible by the number of its divisors (864).

It is a self number, because there is not a number n which added to its sum of digits gives 194707031904.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 978427197 + ... + 978427395.

It is an arithmetic number, because the mean of its divisors is an integer number (849072000).

Almost surely, 2^194707031904 is an apocalyptic number.

194707031904 is a gapful number since it is divisible by the number (14) 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 194707031904, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (366799104000).

194707031904 is an abundant number, since it is smaller than the sum of its proper divisors (538891176096).

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

194707031904 is a wasteful number, since it uses less digits than its factorization.

194707031904 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 445 (or 413 counting only the distinct ones).

The product of its (nonzero) digits is 190512, while the sum is 45.

The spelling of 194707031904 in words is "one hundred ninety-four billion, seven hundred seven million, thirty-one thousand, nine hundred four".