19506489120 has 192 divisors, whose sum is σ = 68339376000. Its totient is φ = 5196653568.

The previous prime is 19506489047. The next prime is 19506489139. The reversal of 19506489120 is 2198460591.

19506489120 is a `hidden beast` number, since 19 + 506 + 4 + 8 + 9 + 120 = 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 31 ways as a sum of consecutive naturals, for example, 6992686 + ... + 6995474.

It is an arithmetic number, because the mean of its divisors is an integer number (355934250).

Almost surely, 2^19506489120 is an apocalyptic number.

19506489120 is a gapful number since it is divisible by the number (10) 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 19506489120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34169688000).

19506489120 is an abundant number, since it is smaller than the sum of its proper divisors (48832886880).

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

19506489120 is a wasteful number, since it uses less digits than its factorization.

19506489120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4432 (or 4418 counting only the distinct ones).

The product of its (nonzero) digits is 155520, while the sum is 45.

The spelling of 19506489120 in words is "nineteen billion, five hundred six million, four hundred eighty-nine thousand, one hundred twenty".