19121287130 has 128 divisors (see below), whose sum is σ = 39788236800. Its totient is φ = 6548636160.

The previous prime is 19121287123. The next prime is 19121287139. The reversal of 19121287130 is 3178212191.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (19121287139) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 82065494 + ... + 82065726.

It is an arithmetic number, because the mean of its divisors is an integer number (310845600).

Almost surely, 2^19121287130 is an apocalyptic number.

19121287130 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

19121287130 is an abundant number, since it is smaller than the sum of its proper divisors (20666949670).

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

19121287130 is a wasteful number, since it uses less digits than its factorization.

19121287130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 636.

The product of its (nonzero) digits is 6048, while the sum is 35.

The spelling of 19121287130 in words is "nineteen billion, one hundred twenty-one million, two hundred eighty-seven thousand, one hundred thirty".