194491323552 has 192 divisors, whose sum is σ = 524581263360. Its totient is φ = 63078912000.

The previous prime is 194491323517. The next prime is 194491323563. The reversal of 194491323552 is 255323194491.

It is a Smith number, since the sum of its digits (48) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 161940552 + ... + 161941752.

It is an arithmetic number, because the mean of its divisors is an integer number (2732194080).

Almost surely, 2^194491323552 is an apocalyptic number.

194491323552 is a gapful number since it is divisible by the number (12) 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 194491323552, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (262290631680).

194491323552 is an abundant number, since it is smaller than the sum of its proper divisors (330089939808).

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

194491323552 is a wasteful number, since it uses less digits than its factorization.

194491323552 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1587 (or 1579 counting only the distinct ones).

The product of its digits is 1166400, while the sum is 48.

The spelling of 194491323552 in words is "one hundred ninety-four billion, four hundred ninety-one million, three hundred twenty-three thousand, five hundred fifty-two".