199243229446 has 16 divisors (see below), whose sum is σ = 300600946800. Its totient is φ = 99044538208.

The previous prime is 199243229441. The next prime is 199243229453. The reversal of 199243229446 is 644922342991.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (199243229441) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 160201 + ... + 651268.

It is an arithmetic number, because the mean of its divisors is an integer number (18787559175).

Almost surely, 2^199243229446 is an apocalyptic number.

199243229446 is a deficient number, since it is larger than the sum of its proper divisors (101357717354).

199243229446 is a wasteful number, since it uses less digits than its factorization.

199243229446 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 812183.

The product of its digits is 6718464, while the sum is 55.

The spelling of 199243229446 in words is "one hundred ninety-nine billion, two hundred forty-three million, two hundred twenty-nine thousand, four hundred forty-six".