1916312001787 has 2 divisors, whose sum is σ = 1916312001788. Its totient is φ = 1916312001786.

The previous prime is 1916312001767. The next prime is 1916312001811. The reversal of 1916312001787 is 7871002136191.

It is a weak prime.

It is an emirp because it is prime and its reverse (7871002136191) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1916312001787 - 2²³ = 1916303613179 is a prime.

It is not a weakly prime, because it can be changed into another prime (1916312001767) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 958156000893 + 958156000894.

It is an arithmetic number, because the mean of its divisors is an integer number (958156000894).

Almost surely, 2^{1916312001787} is an apocalyptic number.

1916312001787 is a deficient number, since it is larger than the sum of its proper divisors (1).

1916312001787 is an equidigital number, since it uses as much as digits as its factorization.

1916312001787 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 127008, while the sum is 46.

The spelling of 1916312001787 in words is "one trillion, nine hundred sixteen billion, three hundred twelve million, one thousand, seven hundred eighty-seven".