919110009973 has 2 divisors, whose sum is σ = 919110009974. Its totient is φ = 919110009972.

The previous prime is 919110009971. The next prime is 919110010097. The reversal of 919110009973 is 379900011919.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 911906583844 + 7203426129 = 954938^2 + 84873^2 .

It is a cyclic number.

It is not a de Polignac number, because 919110009973 - 2¹ = 919110009971 is a prime.

Together with 919110009971, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (919110009971) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 459555004986 + 459555004987.

It is an arithmetic number, because the mean of its divisors is an integer number (459555004987).

Almost surely, 2^919110009973 is an apocalyptic number.

It is an amenable number.

919110009973 is a deficient number, since it is larger than the sum of its proper divisors (1).

919110009973 is an equidigital number, since it uses as much as digits as its factorization.

919110009973 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 137781, while the sum is 49.

The spelling of 919110009973 in words is "nine hundred nineteen billion, one hundred ten million, nine thousand, nine hundred seventy-three".