19949950126 has 8 divisors (see below), whose sum is σ = 31685214960. Its totient is φ = 9388211808.

The previous prime is 19949950121. The next prime is 19949950129. The reversal of 19949950126 is 62105994991.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19949950121) 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, 293381586 + ... + 293381653.

It is an arithmetic number, because the mean of its divisors is an integer number (3960651870).

Almost surely, 2^19949950126 is an apocalyptic number.

19949950126 is a deficient number, since it is larger than the sum of its proper divisors (11735264834).

19949950126 is a wasteful number, since it uses less digits than its factorization.

19949950126 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 586763258.

The product of its (nonzero) digits is 1574640, while the sum is 55.

The spelling of 19949950126 in words is "nineteen billion, nine hundred forty-nine million, nine hundred fifty thousand, one hundred twenty-six".