19238738742 has 48 divisors (see below), whose sum is σ = 41844570768. Its totient is φ = 6388251840.

The previous prime is 19238738741. The next prime is 19238738797. The reversal of 19238738742 is 24783783291.

19238738742 is a `hidden beast` number, since 192 + 38 + 7 + 387 + 42 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19238738741) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6080853 + ... + 6084015.

It is an arithmetic number, because the mean of its divisors is an integer number (871761891).

Almost surely, 2^19238738742 is an apocalyptic number.

19238738742 is an abundant number, since it is smaller than the sum of its proper divisors (22605832026).

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

19238738742 is a wasteful number, since it uses less digits than its factorization.

19238738742 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4365 (or 4362 counting only the distinct ones).

The product of its digits is 4064256, while the sum is 54.

The spelling of 19238738742 in words is "nineteen billion, two hundred thirty-eight million, seven hundred thirty-eight thousand, seven hundred forty-two".