19258750434 has 128 divisors (see below), whose sum is σ = 49725849600. Its totient is φ = 4825785600.

The previous prime is 19258750411. The next prime is 19258750439. The reversal of 19258750434 is 43405785291.

It is not an unprimeable number, because it can be changed into a prime (19258750439) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 4996452 + ... + 5000304.

It is an arithmetic number, because the mean of its divisors is an integer number (388483200).

Almost surely, 2^19258750434 is an apocalyptic number.

19258750434 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 19258750434, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24862924800).

19258750434 is an abundant number, since it is smaller than the sum of its proper divisors (30467099166).

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

19258750434 is a wasteful number, since it uses less digits than its factorization.

19258750434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4256.

The product of its (nonzero) digits is 1209600, while the sum is 48.

The spelling of 19258750434 in words is "nineteen billion, two hundred fifty-eight million, seven hundred fifty thousand, four hundred thirty-four".