194400369488 has 20 divisors (see below), whose sum is σ = 405623848308. Its totient is φ = 89723247360.

The previous prime is 194400369487. The next prime is 194400369533. The reversal of 194400369488 is 884963004491.

It can be written as a sum of positive squares in 2 ways, for example, as 71894769424 + 122505600064 = 268132^2 + 350008^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (194400369487) 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 3 ways as a sum of consecutive naturals, for example, 467308373 + ... + 467308788.

Almost surely, 2^194400369488 is an apocalyptic number.

It is an amenable number.

194400369488 is an abundant number, since it is smaller than the sum of its proper divisors (211223478820).

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

194400369488 is a wasteful number, since it uses less digits than its factorization.

194400369488 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 934617182 (or 934617176 counting only the distinct ones).

The product of its (nonzero) digits is 5971968, while the sum is 56.

The spelling of 194400369488 in words is "one hundred ninety-four billion, four hundred million, three hundred sixty-nine thousand, four hundred eighty-eight".