19419426850 has 12 divisors (see below), whose sum is σ = 36120134034. Its totient is φ = 7767770720.

The previous prime is 19419426841. The next prime is 19419426883. The reversal of 19419426850 is 5862491491.

It can be written as a sum of positive squares in 3 ways, for example, as 9627730641 + 9791696209 = 98121^2 + 98953^2 .

It is a super-2 number, since 2×19419426850² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 19419426794 and 19419426803.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 194194219 + ... + 194194318.

Almost surely, 2^19419426850 is an apocalyptic number.

19419426850 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

19419426850 is a deficient number, since it is larger than the sum of its proper divisors (16700707184).

19419426850 is a wasteful number, since it uses less digits than its factorization.

19419426850 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 388388549 (or 388388544 counting only the distinct ones).

The product of its (nonzero) digits is 622080, while the sum is 49.

The spelling of 19419426850 in words is "nineteen billion, four hundred nineteen million, four hundred twenty-six thousand, eight hundred fifty".