19743408630 has 96 divisors (see below), whose sum is σ = 58946883840. Its totient is φ = 4534367040.

The previous prime is 19743408623. The next prime is 19743408631. The reversal of 19743408630 is 3680434791.

19743408630 is a `hidden beast` number, since 1 + 9 + 7 + 4 + 3 + 4 + 0 + 8 + 630 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19743408631) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 506002 + ... + 543621.

It is an arithmetic number, because the mean of its divisors is an integer number (614030040).

Almost surely, 2^19743408630 is an apocalyptic number.

19743408630 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

19743408630 is an abundant number, since it is smaller than the sum of its proper divisors (39203475210).

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

19743408630 is a wasteful number, since it uses less digits than its factorization.

19743408630 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1049666 (or 1049663 counting only the distinct ones).

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

The spelling of 19743408630 in words is "nineteen billion, seven hundred forty-three million, four hundred eight thousand, six hundred thirty".