199748126 has 8 divisors (see below), whose sum is σ = 307720200. Its totient is φ = 97174728.

The previous prime is 199748119. The next prime is 199748137. The reversal of 199748126 is 621847991.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1349576 + ... + 1349723.

It is an arithmetic number, because the mean of its divisors is an integer number (38465025).

Almost surely, 2^199748126 is an apocalyptic number.

199748126 is a deficient number, since it is larger than the sum of its proper divisors (107972074).

199748126 is a wasteful number, since it uses less digits than its factorization.

199748126 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2699338.

The product of its digits is 217728, while the sum is 47.

The square root of 199748126 is about 14133.2277275929. The cubic root of 199748126 is about 584.5579498329.

The spelling of 199748126 in words is "one hundred ninety-nine million, seven hundred forty-eight thousand, one hundred twenty-six".