19118040684 has 12 divisors (see below), whose sum is σ = 44608761624. Its totient is φ = 6372680224.

The previous prime is 19118040677. The next prime is 19118040731. The reversal of 19118040684 is 48604081191.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (12).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 796585017 + ... + 796585040.

It is an arithmetic number, because the mean of its divisors is an integer number (3717396802).

Almost surely, 2^19118040684 is an apocalyptic number.

It is an amenable number.

19118040684 is an abundant number, since it is smaller than the sum of its proper divisors (25490720940).

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

19118040684 is a wasteful number, since it uses less digits than its factorization.

19118040684 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1593170064 (or 1593170062 counting only the distinct ones).

The product of its (nonzero) digits is 55296, while the sum is 42.

The spelling of 19118040684 in words is "nineteen billion, one hundred eighteen million, forty thousand, six hundred eighty-four".