194287388740 has 24 divisors (see below), whose sum is σ = 408248046360. Its totient is φ = 77668378368.

The previous prime is 194287388723. The next prime is 194287388749. The reversal of 194287388740 is 47883782491.

It can be written as a sum of positive squares in 4 ways, for example, as 398641156 + 193888747584 = 19966^2 + 440328^2 .

It is not an unprimeable number, because it can be changed into a prime (194287388749) 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, 2876857 + ... + 2943616.

It is an arithmetic number, because the mean of its divisors is an integer number (17010335265).

Almost surely, 2^194287388740 is an apocalyptic number.

194287388740 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

194287388740 is an abundant number, since it is smaller than the sum of its proper divisors (213960657620).

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

194287388740 is a wasteful number, since it uses less digits than its factorization.

194287388740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5822151 (or 5822149 counting only the distinct ones).

The product of its (nonzero) digits is 21676032, while the sum is 61.

The spelling of 194287388740 in words is "one hundred ninety-four billion, two hundred eighty-seven million, three hundred eighty-eight thousand, seven hundred forty".