19294430742 has 128 divisors (see below), whose sum is σ = 44939059200. Its totient is φ = 6128640000.

The previous prime is 19294430641. The next prime is 19294430747. The reversal of 19294430742 is 24703449291.

19294430742 is a `hidden beast` number, since 1 + 92 + 94 + 430 + 7 + 42 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19294430747) 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, 75075478 + ... + 75075734.

It is an arithmetic number, because the mean of its divisors is an integer number (351086400).

Almost surely, 2^19294430742 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 19294430742, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22469529600).

19294430742 is an abundant number, since it is smaller than the sum of its proper divisors (25644628458).

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

19294430742 is a wasteful number, since it uses less digits than its factorization.

19294430742 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 739 (or 733 counting only the distinct ones).

The product of its (nonzero) digits is 435456, while the sum is 45.

The spelling of 19294430742 in words is "nineteen billion, two hundred ninety-four million, four hundred thirty thousand, seven hundred forty-two".