199741956 has 12 divisors (see below), whose sum is σ = 466064592. Its totient is φ = 66580648.

The previous prime is 199741951. The next prime is 199741967. The reversal of 199741956 is 659147991.

199741956 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (12).

It is a junction number, because it is equal to n+sod(n) for n = 199741899 and 199741908.

It is not an unprimeable number, because it can be changed into a prime (199741951) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8322570 + ... + 8322593.

It is an arithmetic number, because the mean of its divisors is an integer number (38838716).

Almost surely, 2^199741956 is an apocalyptic number.

199741956 is the 8939-th centered pentagonal number.

It is an amenable number.

199741956 is an abundant number, since it is smaller than the sum of its proper divisors (266322636).

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

199741956 is a wasteful number, since it uses less digits than its factorization.

199741956 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16645170 (or 16645168 counting only the distinct ones).

The product of its digits is 612360, while the sum is 51.

The square root of 199741956 is about 14133.0094459743. The cubic root of 199741956 is about 584.5519309868.

The spelling of 199741956 in words is "one hundred ninety-nine million, seven hundred forty-one thousand, nine hundred fifty-six".