194685000040 has 32 divisors (see below), whose sum is σ = 438067574280. Its totient is φ = 77869320192.

The previous prime is 194684999983. The next prime is 194685000043. The reversal of 194685000040 is 40000586491.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 165875369284 + 28809630756 = 407278^2 + 169734^2 .

It is not an unprimeable number, because it can be changed into a prime (194685000043) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 571132 + ... + 845908.

Almost surely, 2^194685000040 is an apocalyptic number.

194685000040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

194685000040 is an abundant number, since it is smaller than the sum of its proper divisors (243382574240).

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

194685000040 is a wasteful number, since it uses less digits than its factorization.

194685000040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 292501 (or 292497 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 37.

The spelling of 194685000040 in words is "one hundred ninety-four billion, six hundred eighty-five million, forty", and thus it is an aban number.