1916312001784 has 8 divisors (see below), whose sum is σ = 3593085003360. Its totient is φ = 958156000888.

The previous prime is 1916312001767. The next prime is 1916312001787. The reversal of 1916312001784 is 4871002136191.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (8).

It is a self number, because there is not a number n which added to its sum of digits gives 1916312001784.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1916312001787) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 119769500104 + ... + 119769500119.

It is an arithmetic number, because the mean of its divisors is an integer number (449135625420).

Almost surely, 2^{1916312001784} is an apocalyptic number.

It is an amenable number.

1916312001784 is a deficient number, since it is larger than the sum of its proper divisors (1676773001576).

1916312001784 is a wasteful number, since it uses less digits than its factorization.

1916312001784 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 239539000229 (or 239539000225 counting only the distinct ones).

The product of its (nonzero) digits is 72576, while the sum is 43.

The spelling of 1916312001784 in words is "one trillion, nine hundred sixteen billion, three hundred twelve million, one thousand, seven hundred eighty-four".