19742230464 has 336 divisors, whose sum is σ = 60145867008. Its totient is φ = 5666304000.

The previous prime is 19742230457. The next prime is 19742230471. The reversal of 19742230464 is 46403224791.

It is an interprime number because it is at equal distance from previous prime (19742230457) and next prime (19742230471).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 144103804 + ... + 144103940.

Almost surely, 2^19742230464 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 19742230464, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30072933504).

19742230464 is an abundant number, since it is smaller than the sum of its proper divisors (40403636544).

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

19742230464 is a wasteful number, since it uses less digits than its factorization.

19742230464 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 296 (or 255 counting only the distinct ones).

The product of its (nonzero) digits is 290304, while the sum is 42.

The spelling of 19742230464 in words is "nineteen billion, seven hundred forty-two million, two hundred thirty thousand, four hundred sixty-four".