19250121134 has 8 divisors (see below), whose sum is σ = 28901651688. Its totient is φ = 9616237240.

The previous prime is 19250121133. The next prime is 19250121167. The reversal of 19250121134 is 43112105291.

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

It is a junction number, because it is equal to n+sod(n) for n = 19250121097 and 19250121106.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19250121133) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4408937 + ... + 4413300.

It is an arithmetic number, because the mean of its divisors is an integer number (3612706461).

Almost surely, 2^19250121134 is an apocalyptic number.

19250121134 is a deficient number, since it is larger than the sum of its proper divisors (9651530554).

19250121134 is a wasteful number, since it uses less digits than its factorization.

19250121134 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8823330.

The product of its (nonzero) digits is 2160, while the sum is 29.

The spelling of 19250121134 in words is "nineteen billion, two hundred fifty million, one hundred twenty-one thousand, one hundred thirty-four".