19863260018 has 16 divisors (see below), whose sum is σ = 34090964160. Its totient is φ = 8502910416.

The previous prime is 19863259979. The next prime is 19863260101. The reversal of 19863260018 is 81006236891.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 813821 + ... + 837872.

It is an arithmetic number, because the mean of its divisors is an integer number (2130685260).

Almost surely, 2^19863260018 is an apocalyptic number.

19863260018 is a deficient number, since it is larger than the sum of its proper divisors (14227704142).

19863260018 is a wasteful number, since it uses less digits than its factorization.

19863260018 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1652561.

The product of its (nonzero) digits is 124416, while the sum is 44.

The spelling of 19863260018 in words is "nineteen billion, eight hundred sixty-three million, two hundred sixty thousand, eighteen".