199126368 has 72 divisors (see below), whose sum is σ = 647167248. Its totient is φ = 56892672.

The previous prime is 199126363. The next prime is 199126391. The reversal of 199126368 is 863621991.

It is a happy number.

199126368 is a `hidden beast` number, since 1 + 9 + 9 + 1 + 2 + 636 + 8 = 666.

It is a tau number, because it is divible by the number of its divisors (72).

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (199126363) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 47371 + ... + 51402.

It is an arithmetic number, because the mean of its divisors is an integer number (8988434).

Almost surely, 2^199126368 is an apocalyptic number.

199126368 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

199126368 is an abundant number, since it is smaller than the sum of its proper divisors (448040880).

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

199126368 is a wasteful number, since it uses less digits than its factorization.

199126368 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 98796 (or 98785 counting only the distinct ones).

The product of its digits is 139968, while the sum is 45.

The square root of 199126368 is about 14111.2142638399. The cubic root of 199126368 is about 583.9507996332.

The spelling of 199126368 in words is "one hundred ninety-nine million, one hundred twenty-six thousand, three hundred sixty-eight".