13449181663 has 2 divisors, whose sum is σ = 13449181664. Its totient is φ = 13449181662.

The previous prime is 13449181649. The next prime is 13449181703. The reversal of 13449181663 is 36618194431.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 13449181663 - 2¹³ = 13449173471 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13449181643) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6724590831 + 6724590832.

It is an arithmetic number, because the mean of its divisors is an integer number (6724590832).

Almost surely, 2^13449181663 is an apocalyptic number.

13449181663 is a deficient number, since it is larger than the sum of its proper divisors (1).

13449181663 is an equidigital number, since it uses as much as digits as its factorization.

13449181663 is an evil number, because the sum of its binary digits is even.

The product of its digits is 373248, while the sum is 46.

It can be divided in two parts, 13449 and 181663, that added together give a cube (195112 = 58³).

The spelling of 13449181663 in words is "thirteen billion, four hundred forty-nine million, one hundred eighty-one thousand, six hundred sixty-three".