19114961866 has 32 divisors (see below), whose sum is σ = 38497269888. Its totient is φ = 6874511040.

The previous prime is 19114961851. The next prime is 19114961933. The reversal of 19114961866 is 66816941191.

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 in 15 ways as a sum of consecutive naturals, for example, 4771965 + ... + 4775968.

It is an arithmetic number, because the mean of its divisors is an integer number (1203039684).

Almost surely, 2^19114961866 is an apocalyptic number.

19114961866 is an abundant number, since it is smaller than the sum of its proper divisors (19382308022).

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

19114961866 is a wasteful number, since it uses less digits than its factorization.

19114961866 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9547966.

The product of its digits is 559872, while the sum is 52.

The spelling of 19114961866 in words is "nineteen billion, one hundred fourteen million, nine hundred sixty-one thousand, eight hundred sixty-six".