181458064453 has 2 divisors, whose sum is σ = 181458064454. Its totient is φ = 181458064452.

The previous prime is 181458064397. The next prime is 181458064517. The reversal of 181458064453 is 354460854181.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 181422327969 + 35736484 = 425937^2 + 5978^2 .

It is a cyclic number.

It is not a de Polignac number, because 181458064453 - 2³⁷ = 44019110981 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 181458064397 and 181458064406.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (181458062453) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 90729032226 + 90729032227.

It is an arithmetic number, because the mean of its divisors is an integer number (90729032227).

Almost surely, 2^181458064453 is an apocalyptic number.

It is an amenable number.

181458064453 is a deficient number, since it is larger than the sum of its proper divisors (1).

181458064453 is an equidigital number, since it uses as much as digits as its factorization.

181458064453 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1843200, while the sum is 49.

The spelling of 181458064453 in words is "one hundred eighty-one billion, four hundred fifty-eight million, sixty-four thousand, four hundred fifty-three".