419225431981 has 2 divisors, whose sum is σ = 419225431982. Its totient is φ = 419225431980.

The previous prime is 419225431967. The next prime is 419225432033. The reversal of 419225431981 is 189134522914.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 392419556356 + 26805875625 = 626434^2 + 163725^2 .

It is a cyclic number.

It is not a de Polignac number, because 419225431981 - 2¹³ = 419225423789 is a prime.

It is a super-2 number, since 2×419225431981² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (419225431181) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 209612715990 + 209612715991.

It is an arithmetic number, because the mean of its divisors is an integer number (209612715991).

Almost surely, 2^419225431981 is an apocalyptic number.

It is an amenable number.

419225431981 is a deficient number, since it is larger than the sum of its proper divisors (1).

419225431981 is an equidigital number, since it uses as much as digits as its factorization.

419225431981 is an evil number, because the sum of its binary digits is even.

The product of its digits is 622080, while the sum is 49.

The spelling of 419225431981 in words is "four hundred nineteen billion, two hundred twenty-five million, four hundred thirty-one thousand, nine hundred eighty-one".