919842239471 has 2 divisors, whose sum is σ = 919842239472. Its totient is φ = 919842239470.

The previous prime is 919842239467. The next prime is 919842239497. The reversal of 919842239471 is 174932248919.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 919842239471 - 2² = 919842239467 is a prime.

It is a super-3 number, since 3×919842239471³ (a number of 37 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a self number, because there is not a number n which added to its sum of digits gives 919842239471.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (919842239171) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 459921119735 + 459921119736.

It is an arithmetic number, because the mean of its divisors is an integer number (459921119736).

Almost surely, 2^919842239471 is an apocalyptic number.

919842239471 is a deficient number, since it is larger than the sum of its proper divisors (1).

919842239471 is an equidigital number, since it uses as much as digits as its factorization.

919842239471 is an evil number, because the sum of its binary digits is even.

The product of its digits is 7838208, while the sum is 59.

The spelling of 919842239471 in words is "nine hundred nineteen billion, eight hundred forty-two million, two hundred thirty-nine thousand, four hundred seventy-one".