194912475438 has 16 divisors (see below), whose sum is σ = 398890647936. Its totient is φ = 63459875640.

The previous prime is 194912475409. The next prime is 194912475521. The reversal of 194912475438 is 834574219491.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 377737098 + ... + 377737613.

It is an arithmetic number, because the mean of its divisors is an integer number (24930665496).

Almost surely, 2^194912475438 is an apocalyptic number.

194912475438 is an abundant number, since it is smaller than the sum of its proper divisors (203978172498).

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

194912475438 is a wasteful number, since it uses less digits than its factorization.

194912475438 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 755474759.

The product of its digits is 8709120, while the sum is 57.

The spelling of 194912475438 in words is "one hundred ninety-four billion, nine hundred twelve million, four hundred seventy-five thousand, four hundred thirty-eight".