199260138 has 48 divisors (see below), whose sum is σ = 500633280. Its totient is φ = 51754560.

The previous prime is 199260121. The next prime is 199260167. The reversal of 199260138 is 831062991.

It is a Smith number, since the sum of its digits (39) coincides with the sum of the digits of its prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 199260096 and 199260105.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 14523 + ... + 24686.

It is an arithmetic number, because the mean of its divisors is an integer number (10429860).

Almost surely, 2^199260138 is an apocalyptic number.

199260138 is an abundant number, since it is smaller than the sum of its proper divisors (301373142).

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

199260138 is a wasteful number, since it uses less digits than its factorization.

199260138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39243 (or 39232 counting only the distinct ones).

The product of its (nonzero) digits is 23328, while the sum is 39.

The square root of 199260138 is about 14115.9533153096. The cubic root of 199260138 is about 584.0815333872.

The spelling of 199260138 in words is "one hundred ninety-nine million, two hundred sixty thousand, one hundred thirty-eight".