19673425530 has 256 divisors, whose sum is σ = 59659960320. Its totient is φ = 4570041600.

The previous prime is 19673425529. The next prime is 19673425547. The reversal of 19673425530 is 3552437691.

19673425530 is a `hidden beast` number, since 1 + 9 + 6 + 73 + 42 + 5 + 530 = 666.

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

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 9850492 + ... + 9852488.

It is an arithmetic number, because the mean of its divisors is an integer number (233046720).

Almost surely, 2^19673425530 is an apocalyptic number.

19673425530 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 19673425530, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29829980160).

19673425530 is an abundant number, since it is smaller than the sum of its proper divisors (39986534790).

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

19673425530 is a wasteful number, since it uses less digits than its factorization.

19673425530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2162 (or 2156 counting only the distinct ones).

The product of its (nonzero) digits is 680400, while the sum is 45.

The spelling of 19673425530 in words is "nineteen billion, six hundred seventy-three million, four hundred twenty-five thousand, five hundred thirty".