19267918988 has 12 divisors (see below), whose sum is σ = 33720326472. Its totient is φ = 9633540000.

The previous prime is 19267918951. The next prime is 19267918993. The reversal of 19267918988 is 88981976291.

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 3 ways as a sum of consecutive naturals, for example, 13256 + ... + 196752.

It is an arithmetic number, because the mean of its divisors is an integer number (2810027206).

Almost surely, 2^19267918988 is an apocalyptic number.

It is an amenable number.

19267918988 is a deficient number, since it is larger than the sum of its proper divisors (14452407484).

19267918988 is a wasteful number, since it uses less digits than its factorization.

19267918988 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 209752 (or 209750 counting only the distinct ones).

The product of its digits is 31352832, while the sum is 68.

The spelling of 19267918988 in words is "nineteen billion, two hundred sixty-seven million, nine hundred eighteen thousand, nine hundred eighty-eight".