19048655808 has 672 divisors, whose sum is σ = 73136394240. Its totient is φ = 4598415360.

The previous prime is 19048655783. The next prime is 19048655831. The reversal of 19048655808 is 80855684091.

It is a happy number.

19048655808 is a `hidden beast` number, since 1 + 9 + 0 + 4 + 86 + 558 + 0 + 8 = 666.

It is a tau number, because it is divible by the number of its divisors (672).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 30872716 + ... + 30873332.

It is an arithmetic number, because the mean of its divisors is an integer number (108833920).

Almost surely, 2^19048655808 is an apocalyptic number.

19048655808 is a gapful number since it is divisible by the number (18) 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 19048655808, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (36568197120).

19048655808 is an abundant number, since it is smaller than the sum of its proper divisors (54087738432).

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

19048655808 is a wasteful number, since it uses less digits than its factorization.

19048655808 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 705 (or 692 counting only the distinct ones).

The product of its (nonzero) digits is 2764800, while the sum is 54.

The spelling of 19048655808 in words is "nineteen billion, forty-eight million, six hundred fifty-five thousand, eight hundred eight".