919218706541 has 2 divisors, whose sum is σ = 919218706542. Its totient is φ = 919218706540.

The previous prime is 919218706477. The next prime is 919218706577. The reversal of 919218706541 is 145607812919.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 858281809225 + 60936897316 = 926435^2 + 246854^2 .

It is a cyclic number.

It is not a de Polignac number, because 919218706541 - 2⁶ = 919218706477 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (919218706741) by changing a digit.

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 as a sum of consecutive naturals, namely, 459609353270 + 459609353271.

It is an arithmetic number, because the mean of its divisors is an integer number (459609353271).

Almost surely, 2^919218706541 is an apocalyptic number.

It is an amenable number.

919218706541 is a deficient number, since it is larger than the sum of its proper divisors (1).

919218706541 is an equidigital number, since it uses as much as digits as its factorization.

919218706541 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1088640, while the sum is 53.

The spelling of 919218706541 in words is "nine hundred nineteen billion, two hundred eighteen million, seven hundred six thousand, five hundred forty-one".