19483468509 has 16 divisors (see below), whose sum is σ = 28012178880. Its totient is φ = 12005216640.

The previous prime is 19483468507. The next prime is 19483468531. The reversal of 19483468509 is 90586438491.

It is not a de Polignac number, because 19483468509 - 2¹ = 19483468507 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (57).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19483468507) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4166142 + ... + 4170815.

It is an arithmetic number, because the mean of its divisors is an integer number (1750761180).

Almost surely, 2^19483468509 is an apocalyptic number.

19483468509 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

It is an amenable number.

19483468509 is a deficient number, since it is larger than the sum of its proper divisors (8528710371).

19483468509 is a wasteful number, since it uses less digits than its factorization.

19483468509 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8337020.

The product of its (nonzero) digits is 7464960, while the sum is 57.

The spelling of 19483468509 in words is "nineteen billion, four hundred eighty-three million, four hundred sixty-eight thousand, five hundred nine".