19427660018 has 32 divisors (see below), whose sum is σ = 33051627840. Its totient is φ = 8490381120.

The previous prime is 19427660003. The next prime is 19427660039. The reversal of 19427660018 is 81006672491.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1088321 + ... + 1106027.

It is an arithmetic number, because the mean of its divisors is an integer number (1032863370).

Almost surely, 2^19427660018 is an apocalyptic number.

19427660018 is a deficient number, since it is larger than the sum of its proper divisors (13623967822).

19427660018 is a wasteful number, since it uses less digits than its factorization.

19427660018 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19962.

The product of its (nonzero) digits is 145152, while the sum is 44.

The spelling of 19427660018 in words is "nineteen billion, four hundred twenty-seven million, six hundred sixty thousand, eighteen".