194440018972 has 24 divisors (see below), whose sum is σ = 342181373184. Its totient is φ = 96675442032.

The previous prime is 194440018937. The next prime is 194440018991. The reversal of 194440018972 is 279810044491.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 318543 + ... + 700249.

It is an arithmetic number, because the mean of its divisors is an integer number (14257557216).

Almost surely, 2^194440018972 is an apocalyptic number.

It is an amenable number.

194440018972 is a deficient number, since it is larger than the sum of its proper divisors (147741354212).

194440018972 is a wasteful number, since it uses less digits than its factorization.

194440018972 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 382425 (or 382423 counting only the distinct ones).

The product of its (nonzero) digits is 580608, while the sum is 49.

The spelling of 194440018972 in words is "one hundred ninety-four billion, four hundred forty million, eighteen thousand, nine hundred seventy-two".