13945149469 has 2 divisors, whose sum is σ = 13945149470. Its totient is φ = 13945149468.

The previous prime is 13945149397. The next prime is 13945149473. The reversal of 13945149469 is 96494154931.

13945149469 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 8106661369 + 5838488100 = 90037^2 + 76410^2 .

It is an emirp because it is prime and its reverse (96494154931) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 13945149469 - 2⁷ = 13945149341 is a prime.

It is a super-2 number, since 2×13945149469² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13945149479) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6972574734 + 6972574735.

It is an arithmetic number, because the mean of its divisors is an integer number (6972574735).

Almost surely, 2^13945149469 is an apocalyptic number.

It is an amenable number.

13945149469 is a deficient number, since it is larger than the sum of its proper divisors (1).

13945149469 is an equidigital number, since it uses as much as digits as its factorization.

13945149469 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4199040, while the sum is 55.

The spelling of 13945149469 in words is "thirteen billion, nine hundred forty-five million, one hundred forty-nine thousand, four hundred sixty-nine".