19530380506 has 24 divisors (see below), whose sum is σ = 36699948180. Its totient is φ = 7726303872.

The previous prime is 19530380473. The next prime is 19530380543. The reversal of 19530380506 is 60508303591.

It can be written as a sum of positive squares in 2 ways, for example, as 19087909281 + 442471225 = 138159^2 + 21035^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7663711 + ... + 7666258.

Almost surely, 2^19530380506 is an apocalyptic number.

19530380506 is a deficient number, since it is larger than the sum of its proper divisors (17169567674).

19530380506 is a wasteful number, since it uses less digits than its factorization.

19530380506 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15329998 (or 15329991 counting only the distinct ones).

The product of its (nonzero) digits is 97200, while the sum is 40.

The spelling of 19530380506 in words is "nineteen billion, five hundred thirty million, three hundred eighty thousand, five hundred six".