194869932540 has 96 divisors (see below), whose sum is σ = 557536089600. Its totient is φ = 50837619456.

The previous prime is 194869932533. The next prime is 194869932601. The reversal of 194869932540 is 45239968491.

It is a Harshad number since it is a multiple of its sum of digits (60).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1015161 + ... + 1191759.

It is an arithmetic number, because the mean of its divisors is an integer number (5807667600).

Almost surely, 2^194869932540 is an apocalyptic number.

194869932540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 194869932540, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (278768044800).

194869932540 is an abundant number, since it is smaller than the sum of its proper divisors (362666157060).

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

194869932540 is a wasteful number, since it uses less digits than its factorization.

194869932540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 177011 (or 177009 counting only the distinct ones).

The product of its (nonzero) digits is 16796160, while the sum is 60.

The spelling of 194869932540 in words is "one hundred ninety-four billion, eight hundred sixty-nine million, nine hundred thirty-two thousand, five hundred forty".