194835953536 has 64 divisors (see below), whose sum is σ = 443661003360. Its totient is φ = 83489587200.

The previous prime is 194835953509. The next prime is 194835953539. The reversal of 194835953536 is 635359538491.

It is a tau number, because it is divible by the number of its divisors (64).

It is a super-2 number, since 2×194835953536² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (194835953539) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10887316 + ... + 10905196.

Almost surely, 2^194835953536 is an apocalyptic number.

194835953536 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

194835953536 is an abundant number, since it is smaller than the sum of its proper divisors (248825049824).

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

194835953536 is a wasteful number, since it uses less digits than its factorization.

194835953536 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30063 (or 30051 counting only the distinct ones).

The product of its digits is 52488000, while the sum is 61.

The spelling of 194835953536 in words is "one hundred ninety-four billion, eight hundred thirty-five million, nine hundred fifty-three thousand, five hundred thirty-six".