194355018872 has 64 divisors (see below), whose sum is σ = 423701591040. Its totient is φ = 81857260800.

The previous prime is 194355018857. The next prime is 194355018881. The reversal of 194355018872 is 278810553491.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1157948 + ... + 1315124.

It is an arithmetic number, because the mean of its divisors is an integer number (6620337360).

Almost surely, 2^194355018872 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 194355018872, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (211850795520).

194355018872 is an abundant number, since it is smaller than the sum of its proper divisors (229346572168).

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

194355018872 is a wasteful number, since it uses less digits than its factorization.

194355018872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 157572 (or 157568 counting only the distinct ones).

The product of its (nonzero) digits is 2419200, while the sum is 53.

The spelling of 194355018872 in words is "one hundred ninety-four billion, three hundred fifty-five million, eighteen thousand, eight hundred seventy-two".