15418441481 has 2 divisors, whose sum is σ = 15418441482. Its totient is φ = 15418441480.

The previous prime is 15418441457. The next prime is 15418441487. The reversal of 15418441481 is 18414481451.

15418441481 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., 7829418256 + 7589023225 = 88484^2 + 87115^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-15418441481 is a prime.

It is a super-2 number, since 2×15418441481² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (15418441487) 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, 7709220740 + 7709220741.

It is an arithmetic number, because the mean of its divisors is an integer number (7709220741).

Almost surely, 2^15418441481 is an apocalyptic number.

It is an amenable number.

15418441481 is a deficient number, since it is larger than the sum of its proper divisors (1).

15418441481 is an equidigital number, since it uses as much as digits as its factorization.

15418441481 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 81920, while the sum is 41.

The spelling of 15418441481 in words is "fifteen billion, four hundred eighteen million, four hundred forty-one thousand, four hundred eighty-one".