19944740952 has 192 divisors, whose sum is σ = 62282844000. Its totient is φ = 5723246592.

The previous prime is 19944740929. The next prime is 19944740999. The reversal of 19944740952 is 25904744991.

19944740952 is a `hidden beast` number, since 199 + 4 + 47 + 409 + 5 + 2 = 666.

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, 659638 + ... + 689210.

Almost surely, 2^19944740952 is an apocalyptic number.

19944740952 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 19944740952, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31141422000).

19944740952 is an abundant number, since it is smaller than the sum of its proper divisors (42338103048).

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

19944740952 is a wasteful number, since it uses less digits than its factorization.

19944740952 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29650 (or 29643 counting only the distinct ones).

The product of its (nonzero) digits is 3265920, while the sum is 54.

The spelling of 19944740952 in words is "nineteen billion, nine hundred forty-four million, seven hundred forty thousand, nine hundred fifty-two".