18950419925069 has 2 divisors, whose sum is σ = 18950419925070. Its totient is φ = 18950419925068.

The previous prime is 18950419924999. The next prime is 18950419925113. The reversal of 18950419925069 is 96052991405981.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 14326694343844 + 4623725581225 = 3785062^2 + 2150285^2 .

It is an emirp because it is prime and its reverse (96052991405981) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-18950419925069 is a prime.

It is a super-2 number, since 2×18950419925069² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18950419925669) 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, 9475209962534 + 9475209962535.

It is an arithmetic number, because the mean of its divisors is an integer number (9475209962535).

Almost surely, 2^{18950419925069} is an apocalyptic number.

It is an amenable number.

18950419925069 is a deficient number, since it is larger than the sum of its proper divisors (1).

18950419925069 is an equidigital number, since it uses as much as digits as its factorization.

18950419925069 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 62985600, while the sum is 68.

The spelling of 18950419925069 in words is "eighteen trillion, nine hundred fifty billion, four hundred nineteen million, nine hundred twenty-five thousand, sixty-nine".