19314608518 has 4 divisors (see below), whose sum is σ = 28971912780. Its totient is φ = 9657304258.

The previous prime is 19314608491. The next prime is 19314608543. The reversal of 19314608518 is 81580641391.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 81580641391 = 184271 ⋅442721.

It is a congruent number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 4828652128 + ... + 4828652131.

It is an arithmetic number, because the mean of its divisors is an integer number (7242978195).

Almost surely, 2^19314608518 is an apocalyptic number.

19314608518 is a deficient number, since it is larger than the sum of its proper divisors (9657304262).

19314608518 is an equidigital number, since it uses as much as digits as its factorization.

19314608518 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9657304261.

The product of its (nonzero) digits is 207360, while the sum is 46.

The spelling of 19314608518 in words is "nineteen billion, three hundred fourteen million, six hundred eight thousand, five hundred eighteen".