194039475328 has 192 divisors, whose sum is σ = 428948994600. Its totient is φ = 87097540608.

The previous prime is 194039475323. The next prime is 194039475349. The reversal of 194039475328 is 823574930491.

It can be written as a sum of positive squares in 12 ways, for example, as 191010954304 + 3028521024 = 437048^2 + 55032^2 .

It is not an unprimeable number, because it can be changed into a prime (194039475323) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 157883418 + ... + 157884646.

Almost surely, 2^194039475328 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 194039475328, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (214474497300).

194039475328 is an abundant number, since it is smaller than the sum of its proper divisors (234909519272).

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

194039475328 is a wasteful number, since it uses less digits than its factorization.

194039475328 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1387 (or 1338 counting only the distinct ones).

The product of its (nonzero) digits is 6531840, while the sum is 55.

The spelling of 194039475328 in words is "one hundred ninety-four billion, thirty-nine million, four hundred seventy-five thousand, three hundred twenty-eight".