19143916518 has 32 divisors (see below), whose sum is σ = 38701880064. Its totient is φ = 6312657312.

The previous prime is 19143916511. The next prime is 19143916549. The reversal of 19143916518 is 81561934191.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19143916511) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 169071 + ... + 258597.

It is an arithmetic number, because the mean of its divisors is an integer number (1209433752).

Almost surely, 2^19143916518 is an apocalyptic number.

19143916518 is an abundant number, since it is smaller than the sum of its proper divisors (19557963546).

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

19143916518 is a wasteful number, since it uses less digits than its factorization.

19143916518 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 89916.

The product of its digits is 233280, while the sum is 48.

The spelling of 19143916518 in words is "nineteen billion, one hundred forty-three million, nine hundred sixteen thousand, five hundred eighteen".