18496869481 has 2 divisors, whose sum is σ = 18496869482. Its totient is φ = 18496869480.

The previous prime is 18496869463. The next prime is 18496869553.

18496869481 is nontrivially palindromic in base 10.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 18491648256 + 5221225 = 135984^2 + 2285^2 .

It is a palprime.

It is a cyclic number.

It is not a de Polignac number, because 18496869481 - 2¹⁹ = 18496345193 is a prime.

It is a super-2 number, since 2×18496869481² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (18496869451) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9248434740 + 9248434741.

It is an arithmetic number, because the mean of its divisors is an integer number (9248434741).

Almost surely, 2^18496869481 is an apocalyptic number.

It is an amenable number.

18496869481 is a deficient number, since it is larger than the sum of its proper divisors (1).

18496869481 is an equidigital number, since it uses as much as digits as its factorization.

18496869481 is an evil number, because the sum of its binary digits is even.

The product of its digits is 23887872, while the sum is 64.

The spelling of 18496869481 in words is "eighteen billion, four hundred ninety-six million, eight hundred sixty-nine thousand, four hundred eighty-one".